./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:55:23,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:23,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:23,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:23,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:23,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:23,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:23,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:23,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:23,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:23,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:23,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:23,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:23,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:23,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:23,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:23,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:23,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:23,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:23,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:23,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:23,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:23,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:23,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:23,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:23,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:23,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:23,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:23,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:23,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:23,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:23,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:23,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:23,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:23,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:23,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:23,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:23,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:23,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:23,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:23,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:23,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:55:23,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:23,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:23,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:23,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:23,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:23,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:23,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:23,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:23,346 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:23,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:23,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:23,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:55:23,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:23,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:23,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:55:23,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:23,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:55:23,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:23,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:55:23,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:23,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:55:23,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:23,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:23,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:23,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:23,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:23,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:23,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:55:23,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:55:23,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:55:23,350 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:55:23,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:55:23,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:55:23,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f [2022-11-16 10:55:23,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:23,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:23,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:23,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:23,676 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:23,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2022-11-16 10:55:23,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/data/436d18707/cfff8e4adaab4c4fafb6d2e3726d769b/FLAG21526c279 [2022-11-16 10:55:24,328 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:24,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2022-11-16 10:55:24,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/data/436d18707/cfff8e4adaab4c4fafb6d2e3726d769b/FLAG21526c279 [2022-11-16 10:55:24,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/data/436d18707/cfff8e4adaab4c4fafb6d2e3726d769b [2022-11-16 10:55:24,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:55:24,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:55:24,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:24,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:55:24,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:55:24,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:24,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39514147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24, skipping insertion in model container [2022-11-16 10:55:24,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:24,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:55:24,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:55:24,931 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2022-11-16 10:55:24,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:24,952 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:55:24,964 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2022-11-16 10:55:24,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:24,982 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:55:24,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24 WrapperNode [2022-11-16 10:55:24,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:24,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:24,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:55:24,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:55:24,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:24,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,019 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-11-16 10:55:25,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:25,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:55:25,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:55:25,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:55:25,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:55:25,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:55:25,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:55:25,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:55:25,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (1/1) ... [2022-11-16 10:55:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:25,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:55:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:55:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:55:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 10:55:25,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 10:55:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:55:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:55:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:55:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:55:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:55:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:55:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:55:25,218 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:55:25,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:55:25,450 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:55:25,456 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:55:25,457 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:55:25,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:25 BoogieIcfgContainer [2022-11-16 10:55:25,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:55:25,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:55:25,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:55:25,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:55:25,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:55:24" (1/3) ... [2022-11-16 10:55:25,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f825f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:25, skipping insertion in model container [2022-11-16 10:55:25,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:24" (2/3) ... [2022-11-16 10:55:25,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f825f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:25, skipping insertion in model container [2022-11-16 10:55:25,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:25" (3/3) ... [2022-11-16 10:55:25,494 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2022-11-16 10:55:25,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:55:25,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:55:25,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:55:25,625 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@680f2bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:55:25,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 10:55:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:55:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 10:55:25,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:25,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:25,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:25,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:25,645 INFO L85 PathProgramCache]: Analyzing trace with hash -687560493, now seen corresponding path program 1 times [2022-11-16 10:55:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:25,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058943414] [2022-11-16 10:55:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 10:55:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058943414] [2022-11-16 10:55:25,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058943414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:25,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:25,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:55:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844967644] [2022-11-16 10:55:25,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:25,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 10:55:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 10:55:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:55:25,976 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 10:55:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:25,998 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2022-11-16 10:55:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 10:55:26,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-16 10:55:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:26,008 INFO L225 Difference]: With dead ends: 47 [2022-11-16 10:55:26,008 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 10:55:26,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:55:26,016 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:26,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:55:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 10:55:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 10:55:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:55:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-16 10:55:26,062 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 19 [2022-11-16 10:55:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:26,062 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-16 10:55:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 10:55:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-16 10:55:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 10:55:26,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:26,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:55:26,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1294753969, now seen corresponding path program 1 times [2022-11-16 10:55:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:26,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797651523] [2022-11-16 10:55:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 10:55:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:26,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797651523] [2022-11-16 10:55:26,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797651523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:26,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:26,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:26,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900113511] [2022-11-16 10:55:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:26,375 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 10:55:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:26,466 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-16 10:55:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:55:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 10:55:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:26,469 INFO L225 Difference]: With dead ends: 39 [2022-11-16 10:55:26,470 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 10:55:26,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:26,475 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:26,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 10:55:26,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2022-11-16 10:55:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:55:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-16 10:55:26,483 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2022-11-16 10:55:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:26,483 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-16 10:55:26,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 10:55:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-16 10:55:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 10:55:26,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:26,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:55:26,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash -554531054, now seen corresponding path program 1 times [2022-11-16 10:55:26,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:26,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76640240] [2022-11-16 10:55:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 10:55:27,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:27,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76640240] [2022-11-16 10:55:27,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76640240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:27,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578958205] [2022-11-16 10:55:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:27,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:27,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:27,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:27,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:55:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 10:55:27,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:27,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:55:27,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:55:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 10:55:27,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:27,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:55:27,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:55:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 10:55:27,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578958205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:27,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:27,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 19 [2022-11-16 10:55:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524451871] [2022-11-16 10:55:27,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 10:55:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 10:55:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-11-16 10:55:27,990 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 10:55:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:28,411 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-11-16 10:55:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 10:55:28,412 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2022-11-16 10:55:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:28,413 INFO L225 Difference]: With dead ends: 48 [2022-11-16 10:55:28,414 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 10:55:28,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:55:28,416 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 123 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:28,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 159 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:55:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 10:55:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2022-11-16 10:55:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 10:55:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-16 10:55:28,426 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 27 [2022-11-16 10:55:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:28,427 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-16 10:55:28,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 10:55:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-16 10:55:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 10:55:28,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:28,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:28,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:28,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:28,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1909003512, now seen corresponding path program 1 times [2022-11-16 10:55:28,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:28,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986507083] [2022-11-16 10:55:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986507083] [2022-11-16 10:55:28,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986507083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504303863] [2022-11-16 10:55:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:28,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:28,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:28,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:28,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:55:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:28,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 10:55:28,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:28,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:28,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504303863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:28,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:28,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-16 10:55:28,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434671408] [2022-11-16 10:55:28,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:28,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 10:55:28,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:28,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 10:55:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:55:28,974 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 10:55:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:29,079 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-16 10:55:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:55:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-11-16 10:55:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:29,081 INFO L225 Difference]: With dead ends: 53 [2022-11-16 10:55:29,081 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 10:55:29,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-16 10:55:29,082 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:29,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 105 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 10:55:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2022-11-16 10:55:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 10:55:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-16 10:55:29,089 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 31 [2022-11-16 10:55:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:29,089 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-16 10:55:29,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 10:55:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-16 10:55:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 10:55:29,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:29,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:29,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:29,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:29,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1118110763, now seen corresponding path program 2 times [2022-11-16 10:55:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:29,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265787140] [2022-11-16 10:55:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:29,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:29,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:29,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265787140] [2022-11-16 10:55:29,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265787140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:29,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706486354] [2022-11-16 10:55:29,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:29,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:29,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:29,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:29,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:55:29,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:55:29,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:29,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 10:55:29,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:30,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:30,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:55:30,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:55:30,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:55:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:30,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706486354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:30,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:30,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2022-11-16 10:55:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596878559] [2022-11-16 10:55:30,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:55:30,697 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 10:55:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:31,198 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2022-11-16 10:55:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 10:55:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 35 [2022-11-16 10:55:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:31,200 INFO L225 Difference]: With dead ends: 67 [2022-11-16 10:55:31,200 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 10:55:31,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 10:55:31,202 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 155 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:31,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 180 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 266 Invalid, 0 Unknown, 19 Unchecked, 0.2s Time] [2022-11-16 10:55:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 10:55:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 41. [2022-11-16 10:55:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-16 10:55:31,215 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2022-11-16 10:55:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:31,215 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-16 10:55:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 10:55:31,216 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-16 10:55:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 10:55:31,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:31,218 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:31,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:31,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1711359563, now seen corresponding path program 2 times [2022-11-16 10:55:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:31,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669969773] [2022-11-16 10:55:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:31,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669969773] [2022-11-16 10:55:31,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669969773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727366408] [2022-11-16 10:55:31,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:31,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:31,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:55:31,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:55:31,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:31,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 10:55:31,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:32,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:32,502 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:55:32,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:55:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 10:55:32,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:32,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:55:32,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:55:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:33,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727366408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:33,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:33,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 34 [2022-11-16 10:55:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148990180] [2022-11-16 10:55:33,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:33,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 10:55:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 10:55:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 10:55:33,316 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-16 10:55:33,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:33,911 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-11-16 10:55:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 10:55:33,912 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 39 [2022-11-16 10:55:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:33,913 INFO L225 Difference]: With dead ends: 53 [2022-11-16 10:55:33,913 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 10:55:33,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=330, Invalid=1832, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 10:55:33,915 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:33,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 154 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 79 Unchecked, 0.1s Time] [2022-11-16 10:55:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 10:55:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-16 10:55:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-16 10:55:33,924 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 39 [2022-11-16 10:55:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:33,924 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-16 10:55:33,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-16 10:55:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-16 10:55:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 10:55:33,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:33,926 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:33,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:34,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:34,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -181817714, now seen corresponding path program 3 times [2022-11-16 10:55:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:34,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680492801] [2022-11-16 10:55:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:34,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680492801] [2022-11-16 10:55:34,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680492801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:34,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379054799] [2022-11-16 10:55:34,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:55:34,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:34,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:34,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:55:34,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 10:55:34,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:34,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 10:55:34,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:34,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:35,111 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 10:55:35,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 10:55:35,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:55:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:35,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:35,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:55:35,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:55:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:35,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379054799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:35,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:35,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2022-11-16 10:55:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038406338] [2022-11-16 10:55:35,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:55:35,490 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-16 10:55:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:35,829 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-11-16 10:55:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 10:55:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 47 [2022-11-16 10:55:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:35,830 INFO L225 Difference]: With dead ends: 61 [2022-11-16 10:55:35,830 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 10:55:35,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 10:55:35,832 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:35,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 175 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 219 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-16 10:55:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 10:55:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2022-11-16 10:55:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-11-16 10:55:35,856 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 47 [2022-11-16 10:55:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:35,856 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-11-16 10:55:35,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-16 10:55:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-11-16 10:55:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 10:55:35,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:35,859 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:35,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:36,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:36,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 513051739, now seen corresponding path program 3 times [2022-11-16 10:55:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:36,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003505648] [2022-11-16 10:55:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 10:55:36,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:36,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003505648] [2022-11-16 10:55:36,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003505648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:36,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980841329] [2022-11-16 10:55:36,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:55:36,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:36,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:36,740 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:36,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:55:36,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 10:55:36,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:36,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 10:55:36,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:36,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:37,065 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 10:55:37,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:55:37,209 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 10:55:37,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:55:37,328 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 10:55:37,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:55:37,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 10:55:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 43 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 10:55:37,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:37,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:55:37,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:55:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 10:55:37,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980841329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:37,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:37,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 24 [2022-11-16 10:55:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957628446] [2022-11-16 10:55:37,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:37,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:37,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:55:37,751 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 20 states have internal predecessors, (49), 7 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-16 10:55:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:38,182 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-11-16 10:55:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:55:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 20 states have internal predecessors, (49), 7 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) Word has length 51 [2022-11-16 10:55:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:38,184 INFO L225 Difference]: With dead ends: 71 [2022-11-16 10:55:38,184 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 10:55:38,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 92 SyntacticMatches, 15 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 10:55:38,185 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:38,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 271 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 384 Invalid, 0 Unknown, 13 Unchecked, 0.3s Time] [2022-11-16 10:55:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 10:55:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2022-11-16 10:55:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-11-16 10:55:38,196 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 51 [2022-11-16 10:55:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:38,197 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-11-16 10:55:38,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 20 states have internal predecessors, (49), 7 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-16 10:55:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-11-16 10:55:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 10:55:38,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:38,198 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:38,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 10:55:38,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:38,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:38,404 INFO L85 PathProgramCache]: Analyzing trace with hash -581569404, now seen corresponding path program 4 times [2022-11-16 10:55:38,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:38,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403760727] [2022-11-16 10:55:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:38,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403760727] [2022-11-16 10:55:38,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403760727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957852928] [2022-11-16 10:55:38,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:55:38,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:38,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:38,992 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:39,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:55:39,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:55:39,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:39,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 10:55:39,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:39,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:55:39,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 10:55:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:39,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:39,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:55:39,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:55:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:39,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957852928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:39,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:39,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 31 [2022-11-16 10:55:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333070784] [2022-11-16 10:55:39,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 10:55:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 10:55:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2022-11-16 10:55:39,844 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 25 states have internal predecessors, (68), 11 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-16 10:55:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:40,605 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-11-16 10:55:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 10:55:40,606 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 25 states have internal predecessors, (68), 11 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) Word has length 51 [2022-11-16 10:55:40,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:40,607 INFO L225 Difference]: With dead ends: 86 [2022-11-16 10:55:40,607 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 10:55:40,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=324, Invalid=1746, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:55:40,608 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 195 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:40,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 297 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 10:55:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 57. [2022-11-16 10:55:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-11-16 10:55:40,621 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 51 [2022-11-16 10:55:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:40,622 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-11-16 10:55:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 25 states have internal predecessors, (68), 11 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-16 10:55:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-11-16 10:55:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 10:55:40,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:40,623 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:40,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 10:55:40,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:40,833 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2001937361, now seen corresponding path program 5 times [2022-11-16 10:55:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:40,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706750887] [2022-11-16 10:55:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 10:55:41,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706750887] [2022-11-16 10:55:41,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706750887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012458069] [2022-11-16 10:55:41,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:55:41,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:41,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:41,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:41,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 10:55:41,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-16 10:55:41,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:41,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 10:55:41,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:41,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:41,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:55:41,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:55:41,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:55:41,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:55:42,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:55:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 10:55:42,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:42,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:55:42,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:55:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 10:55:42,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012458069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:42,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:42,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 30 [2022-11-16 10:55:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377477909] [2022-11-16 10:55:42,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:42,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 10:55:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 10:55:42,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-11-16 10:55:42,520 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 26 states have internal predecessors, (67), 10 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-16 10:55:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:42,998 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-11-16 10:55:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 10:55:42,999 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 26 states have internal predecessors, (67), 10 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 55 [2022-11-16 10:55:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:42,999 INFO L225 Difference]: With dead ends: 73 [2022-11-16 10:55:43,000 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 10:55:43,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 97 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=1401, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 10:55:43,001 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:43,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 229 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 370 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-16 10:55:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 10:55:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2022-11-16 10:55:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-11-16 10:55:43,026 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 55 [2022-11-16 10:55:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:43,027 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-11-16 10:55:43,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 26 states have internal predecessors, (67), 10 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-16 10:55:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-11-16 10:55:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 10:55:43,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:43,028 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:43,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 10:55:43,234 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1453174918, now seen corresponding path program 6 times [2022-11-16 10:55:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:43,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689480463] [2022-11-16 10:55:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:43,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 10:55:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:43,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689480463] [2022-11-16 10:55:43,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689480463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:43,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59980308] [2022-11-16 10:55:43,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:55:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:43,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:43,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 10:55:43,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-16 10:55:43,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:43,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:55:43,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 10:55:43,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 10:55:43,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59980308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:43,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:43,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-16 10:55:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750158723] [2022-11-16 10:55:43,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:43,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 10:55:43,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:43,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 10:55:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-16 10:55:43,739 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 10:55:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:43,892 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2022-11-16 10:55:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 10:55:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 55 [2022-11-16 10:55:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:43,894 INFO L225 Difference]: With dead ends: 89 [2022-11-16 10:55:43,894 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 10:55:43,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-16 10:55:43,895 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:43,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 130 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 10:55:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-11-16 10:55:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2022-11-16 10:55:43,918 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 55 [2022-11-16 10:55:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:43,918 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2022-11-16 10:55:43,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 10:55:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2022-11-16 10:55:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 10:55:43,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:43,922 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:43,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:44,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 10:55:44,127 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1754460089, now seen corresponding path program 7 times [2022-11-16 10:55:44,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:44,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631652437] [2022-11-16 10:55:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:44,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 10:55:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631652437] [2022-11-16 10:55:44,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631652437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376123616] [2022-11-16 10:55:44,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:55:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:44,818 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:44,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 10:55:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 10:55:44,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:45,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:55:45,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-11-16 10:55:45,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:55:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:45,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:45,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376123616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:45,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:45,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2022-11-16 10:55:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040371293] [2022-11-16 10:55:45,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:45,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 10:55:45,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 10:55:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2022-11-16 10:55:45,625 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-16 10:55:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:46,138 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2022-11-16 10:55:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 10:55:46,139 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 59 [2022-11-16 10:55:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:46,141 INFO L225 Difference]: With dead ends: 62 [2022-11-16 10:55:46,141 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 10:55:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=1410, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 10:55:46,143 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:46,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 460 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-11-16 10:55:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 10:55:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-11-16 10:55:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:55:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-11-16 10:55:46,162 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 59 [2022-11-16 10:55:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:46,162 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-11-16 10:55:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-16 10:55:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-11-16 10:55:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 10:55:46,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:46,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:46,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 10:55:46,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 10:55:46,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash 120574397, now seen corresponding path program 8 times [2022-11-16 10:55:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:46,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191631868] [2022-11-16 10:55:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 10:55:46,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:46,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191631868] [2022-11-16 10:55:46,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191631868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:46,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348348949] [2022-11-16 10:55:46,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:46,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:46,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:46,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:46,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 10:55:47,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:55:47,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 10:55:47,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:47,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:47,805 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:55:47,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:55:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 49 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 10:55:47,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:48,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:55:48,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:55:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 43 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 10:55:49,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348348949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:49,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:49,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 46 [2022-11-16 10:55:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209692074] [2022-11-16 10:55:49,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 10:55:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 10:55:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:55:49,051 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 40 states have internal predecessors, (99), 14 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (17), 17 states have call predecessors, (17), 14 states have call successors, (17) [2022-11-16 10:55:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:50,300 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-11-16 10:55:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 10:55:50,301 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 40 states have internal predecessors, (99), 14 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (17), 17 states have call predecessors, (17), 14 states have call successors, (17) Word has length 63 [2022-11-16 10:55:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:50,302 INFO L225 Difference]: With dead ends: 80 [2022-11-16 10:55:50,302 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 10:55:50,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=631, Invalid=4061, Unknown=0, NotChecked=0, Total=4692 [2022-11-16 10:55:50,304 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:50,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 268 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 288 Invalid, 0 Unknown, 103 Unchecked, 0.3s Time] [2022-11-16 10:55:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 10:55:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 10:55:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 10:55:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-11-16 10:55:50,317 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 63 [2022-11-16 10:55:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:50,317 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-11-16 10:55:50,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 40 states have internal predecessors, (99), 14 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (17), 17 states have call predecessors, (17), 14 states have call successors, (17) [2022-11-16 10:55:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-11-16 10:55:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 10:55:50,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:50,319 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:50,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:50,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash -700161792, now seen corresponding path program 9 times [2022-11-16 10:55:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:50,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263223914] [2022-11-16 10:55:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:55:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 10:55:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263223914] [2022-11-16 10:55:51,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263223914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:51,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679812102] [2022-11-16 10:55:51,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:55:51,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:51,251 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:51,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 10:55:51,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-16 10:55:51,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:51,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 10:55:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:51,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:55:53,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-16 10:55:54,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:55:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 10:55:54,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:54,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-11-16 10:55:54,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-11-16 10:55:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 10:55:54,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679812102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:54,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:54,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 34 [2022-11-16 10:55:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808964947] [2022-11-16 10:55:54,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:54,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 10:55:54,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 10:55:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=999, Unknown=1, NotChecked=0, Total=1122 [2022-11-16 10:55:54,607 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-16 10:55:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:55,400 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-16 10:55:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 10:55:55,401 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) Word has length 71 [2022-11-16 10:55:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:55,403 INFO L225 Difference]: With dead ends: 112 [2022-11-16 10:55:55,403 INFO L226 Difference]: Without dead ends: 110 [2022-11-16 10:55:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 133 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=278, Invalid=2171, Unknown=1, NotChecked=0, Total=2450 [2022-11-16 10:55:55,405 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 145 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:55,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 441 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 682 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2022-11-16 10:55:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-16 10:55:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2022-11-16 10:55:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:55:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-11-16 10:55:55,428 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 71 [2022-11-16 10:55:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-11-16 10:55:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-16 10:55:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-11-16 10:55:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 10:55:55,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:55,437 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:55,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:55,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:55,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1947082230, now seen corresponding path program 10 times [2022-11-16 10:55:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:55,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477563990] [2022-11-16 10:55:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:55:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 10:55:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477563990] [2022-11-16 10:55:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477563990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340626166] [2022-11-16 10:55:56,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:55:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:56,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:56,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 10:55:56,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:55:56,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:56,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 10:55:56,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:56,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:55:57,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:55:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 24 proven. 89 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 10:55:57,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:57,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:55:57,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:55:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 10:55:57,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340626166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:57,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:57,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 36 [2022-11-16 10:55:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805002968] [2022-11-16 10:55:57,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:57,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 10:55:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 10:55:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 10:55:57,491 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 36 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 32 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-16 10:55:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:58,585 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2022-11-16 10:55:58,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 10:55:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 32 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) Word has length 75 [2022-11-16 10:55:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:58,587 INFO L225 Difference]: With dead ends: 114 [2022-11-16 10:55:58,587 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 10:55:58,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 143 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=388, Invalid=2804, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 10:55:58,589 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 259 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:58,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 524 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 10:55:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 10:55:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2022-11-16 10:55:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:55:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-11-16 10:55:58,617 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 75 [2022-11-16 10:55:58,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:58,618 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-11-16 10:55:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 32 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-16 10:55:58,618 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-11-16 10:55:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 10:55:58,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:58,619 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:58,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:58,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 10:55:58,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:58,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1497562435, now seen corresponding path program 11 times [2022-11-16 10:55:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:58,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715097969] [2022-11-16 10:55:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:58,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:55:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:55:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:55:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:55:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:55:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:55:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:55:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:55:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 15 proven. 105 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:55:59,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715097969] [2022-11-16 10:55:59,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715097969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419177243] [2022-11-16 10:55:59,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:55:59,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:59,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:59,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:59,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 10:55:59,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-16 10:55:59,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:59,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 10:55:59,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:59,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:00,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:00,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:00,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:00,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:00,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 48 proven. 111 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 10:56:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:00,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:56:00,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:56:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 15 proven. 104 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 10:56:01,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419177243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:01,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:01,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 19] total 38 [2022-11-16 10:56:01,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761889735] [2022-11-16 10:56:01,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:01,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 10:56:01,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 10:56:01,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 10:56:01,040 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 38 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 34 states have internal predecessors, (95), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-16 10:56:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:01,727 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2022-11-16 10:56:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 10:56:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 34 states have internal predecessors, (95), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) Word has length 79 [2022-11-16 10:56:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:01,728 INFO L225 Difference]: With dead ends: 105 [2022-11-16 10:56:01,728 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 10:56:01,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=297, Invalid=2253, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 10:56:01,730 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 113 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:01,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 415 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 748 Invalid, 0 Unknown, 36 Unchecked, 0.4s Time] [2022-11-16 10:56:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 10:56:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2022-11-16 10:56:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:56:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-11-16 10:56:01,748 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 79 [2022-11-16 10:56:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:01,748 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-11-16 10:56:01,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 34 states have internal predecessors, (95), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-16 10:56:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-11-16 10:56:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 10:56:01,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:01,750 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:01,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:01,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 10:56:01,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:01,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:01,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1814327276, now seen corresponding path program 12 times [2022-11-16 10:56:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:01,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934101797] [2022-11-16 10:56:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:01,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 10:56:02,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:02,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934101797] [2022-11-16 10:56:02,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934101797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:02,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385409835] [2022-11-16 10:56:02,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:56:02,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:02,256 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:02,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 10:56:02,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-16 10:56:02,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:02,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 10:56:02,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 10:56:02,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 10:56:02,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385409835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:02,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:02,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-16 10:56:02,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048859199] [2022-11-16 10:56:02,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:02,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 10:56:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 10:56:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-16 10:56:02,762 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-16 10:56:03,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:03,003 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2022-11-16 10:56:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 10:56:03,004 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2022-11-16 10:56:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:03,005 INFO L225 Difference]: With dead ends: 121 [2022-11-16 10:56:03,005 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 10:56:03,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 152 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-11-16 10:56:03,006 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 102 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:03,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 232 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 10:56:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2022-11-16 10:56:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:56:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-11-16 10:56:03,028 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 79 [2022-11-16 10:56:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-11-16 10:56:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-16 10:56:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-11-16 10:56:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 10:56:03,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:03,029 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:03,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 10:56:03,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash -502341447, now seen corresponding path program 13 times [2022-11-16 10:56:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:03,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591954125] [2022-11-16 10:56:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 18 proven. 116 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:56:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:03,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591954125] [2022-11-16 10:56:03,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591954125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:03,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819300906] [2022-11-16 10:56:03,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:56:03,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:03,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:03,899 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:03,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 10:56:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:04,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 10:56:04,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:04,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:04,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:04,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:04,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 40 proven. 116 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 10:56:04,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:05,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:56:05,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:56:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 18 proven. 116 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:56:05,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819300906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:05,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:05,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 40 [2022-11-16 10:56:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016846657] [2022-11-16 10:56:05,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:05,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 10:56:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 10:56:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 10:56:05,348 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-16 10:56:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:06,097 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2022-11-16 10:56:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 10:56:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) Word has length 83 [2022-11-16 10:56:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:06,099 INFO L225 Difference]: With dead ends: 86 [2022-11-16 10:56:06,099 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 10:56:06,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 155 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=294, Invalid=2462, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 10:56:06,101 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 141 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:06,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 894 Invalid, 0 Unknown, 28 Unchecked, 0.5s Time] [2022-11-16 10:56:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 10:56:06,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-11-16 10:56:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:56:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2022-11-16 10:56:06,118 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 83 [2022-11-16 10:56:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:06,119 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2022-11-16 10:56:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-16 10:56:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2022-11-16 10:56:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 10:56:06,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:06,120 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:06,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 10:56:06,326 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1833952977, now seen corresponding path program 14 times [2022-11-16 10:56:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900813508] [2022-11-16 10:56:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 21 proven. 131 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:56:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900813508] [2022-11-16 10:56:07,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900813508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444294727] [2022-11-16 10:56:07,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:56:07,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:07,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:07,058 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:07,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 10:56:07,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:56:07,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:07,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 10:56:07,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:07,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:08,351 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:56:08,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:56:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 60 proven. 101 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 10:56:08,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:09,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:56:09,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:56:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 61 proven. 91 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:56:10,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444294727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:10,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:10,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22] total 59 [2022-11-16 10:56:10,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426489284] [2022-11-16 10:56:10,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:10,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 10:56:10,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 10:56:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=3026, Unknown=0, NotChecked=0, Total=3422 [2022-11-16 10:56:10,011 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 59 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 53 states have internal predecessors, (141), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (23), 23 states have call predecessors, (23), 20 states have call successors, (23) [2022-11-16 10:56:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:12,065 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2022-11-16 10:56:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 10:56:12,066 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 53 states have internal predecessors, (141), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (23), 23 states have call predecessors, (23), 20 states have call successors, (23) Word has length 87 [2022-11-16 10:56:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:12,067 INFO L225 Difference]: With dead ends: 112 [2022-11-16 10:56:12,067 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 10:56:12,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1006, Invalid=7366, Unknown=0, NotChecked=0, Total=8372 [2022-11-16 10:56:12,070 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:12,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 472 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 495 Invalid, 0 Unknown, 118 Unchecked, 0.3s Time] [2022-11-16 10:56:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 10:56:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-16 10:56:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 10:56:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-11-16 10:56:12,090 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 87 [2022-11-16 10:56:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:12,090 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-11-16 10:56:12,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 53 states have internal predecessors, (141), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (23), 23 states have call predecessors, (23), 20 states have call successors, (23) [2022-11-16 10:56:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-11-16 10:56:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 10:56:12,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:12,092 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:12,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:12,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:12,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash -110375054, now seen corresponding path program 15 times [2022-11-16 10:56:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:12,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607951483] [2022-11-16 10:56:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 21 proven. 162 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 10:56:13,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607951483] [2022-11-16 10:56:13,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607951483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832264972] [2022-11-16 10:56:13,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:56:13,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:13,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:13,165 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:13,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 10:56:13,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-16 10:56:13,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:13,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 10:56:13,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:13,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:16,341 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 10:56:16,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 10:56:16,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:56:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 47 proven. 162 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 10:56:16,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:16,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:56:16,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:56:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 21 proven. 162 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 10:56:17,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832264972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:17,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:17,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 42 [2022-11-16 10:56:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080068095] [2022-11-16 10:56:17,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 10:56:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 10:56:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1569, Unknown=1, NotChecked=0, Total=1722 [2022-11-16 10:56:17,146 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 42 states, 41 states have (on average 2.658536585365854) internal successors, (109), 37 states have internal predecessors, (109), 16 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-16 10:56:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:18,023 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2022-11-16 10:56:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 10:56:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.658536585365854) internal successors, (109), 37 states have internal predecessors, (109), 16 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) Word has length 95 [2022-11-16 10:56:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:18,025 INFO L225 Difference]: With dead ends: 131 [2022-11-16 10:56:18,025 INFO L226 Difference]: Without dead ends: 129 [2022-11-16 10:56:18,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 182 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=285, Invalid=2906, Unknown=1, NotChecked=0, Total=3192 [2022-11-16 10:56:18,027 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 139 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:18,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 578 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 950 Invalid, 0 Unknown, 94 Unchecked, 0.5s Time] [2022-11-16 10:56:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-16 10:56:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 97. [2022-11-16 10:56:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 10:56:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2022-11-16 10:56:18,051 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 95 [2022-11-16 10:56:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:18,051 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2022-11-16 10:56:18,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.658536585365854) internal successors, (109), 37 states have internal predecessors, (109), 16 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-16 10:56:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2022-11-16 10:56:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 10:56:18,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:18,053 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:18,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:18,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:18,258 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1072364696, now seen corresponding path program 16 times [2022-11-16 10:56:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:18,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129040215] [2022-11-16 10:56:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:18,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 181 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 10:56:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:19,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129040215] [2022-11-16 10:56:19,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129040215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:19,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200898825] [2022-11-16 10:56:19,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:56:19,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:19,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:19,073 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:19,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 10:56:19,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:56:19,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:19,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 10:56:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:19,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:56:20,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 181 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 10:56:20,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:20,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:56:20,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:56:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 181 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 10:56:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200898825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:20,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:20,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 22] total 46 [2022-11-16 10:56:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079138356] [2022-11-16 10:56:20,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 10:56:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 10:56:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:56:20,783 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 46 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 17 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-16 10:56:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:22,288 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2022-11-16 10:56:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 10:56:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 17 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) Word has length 99 [2022-11-16 10:56:22,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:22,291 INFO L225 Difference]: With dead ends: 146 [2022-11-16 10:56:22,291 INFO L226 Difference]: Without dead ends: 144 [2022-11-16 10:56:22,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=512, Invalid=4744, Unknown=0, NotChecked=0, Total=5256 [2022-11-16 10:56:22,292 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 389 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:22,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 730 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:56:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-16 10:56:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2022-11-16 10:56:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 10:56:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2022-11-16 10:56:22,313 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 99 [2022-11-16 10:56:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:22,313 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2022-11-16 10:56:22,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 17 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-16 10:56:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2022-11-16 10:56:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 10:56:22,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:22,314 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:22,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:22,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 10:56:22,519 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -369454411, now seen corresponding path program 17 times [2022-11-16 10:56:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:22,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631687281] [2022-11-16 10:56:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:22,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 21 proven. 197 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 10:56:23,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631687281] [2022-11-16 10:56:23,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631687281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255446702] [2022-11-16 10:56:23,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:56:23,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:23,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:23,371 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:23,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 10:56:23,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-16 10:56:23,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:23,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 10:56:23,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:24,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:24,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:24,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:24,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:24,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 70 proven. 209 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 10:56:24,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:25,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:56:25,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:56:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 21 proven. 196 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 10:56:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255446702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:25,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 46 [2022-11-16 10:56:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32245104] [2022-11-16 10:56:25,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:25,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 10:56:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 10:56:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:56:25,286 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 46 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-16 10:56:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:26,321 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2022-11-16 10:56:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 10:56:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) Word has length 103 [2022-11-16 10:56:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:26,325 INFO L225 Difference]: With dead ends: 137 [2022-11-16 10:56:26,325 INFO L226 Difference]: Without dead ends: 135 [2022-11-16 10:56:26,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 193 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=355, Invalid=3305, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 10:56:26,326 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 159 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:26,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 711 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1395 Invalid, 0 Unknown, 30 Unchecked, 0.7s Time] [2022-11-16 10:56:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-16 10:56:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2022-11-16 10:56:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 10:56:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-11-16 10:56:26,349 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 103 [2022-11-16 10:56:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:26,350 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-11-16 10:56:26,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-16 10:56:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-11-16 10:56:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 10:56:26,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:26,352 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:26,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:26,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:26,557 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -428389282, now seen corresponding path program 18 times [2022-11-16 10:56:26,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:26,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699299899] [2022-11-16 10:56:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 73 proven. 116 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-16 10:56:26,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:26,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699299899] [2022-11-16 10:56:26,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699299899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:26,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041218765] [2022-11-16 10:56:26,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:56:26,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:26,871 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:26,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 10:56:27,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-16 10:56:27,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:27,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 10:56:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-16 10:56:27,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-16 10:56:27,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041218765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:27,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:27,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2022-11-16 10:56:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293273242] [2022-11-16 10:56:27,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 10:56:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 10:56:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2022-11-16 10:56:27,740 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-16 10:56:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:28,048 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2022-11-16 10:56:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 10:56:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 103 [2022-11-16 10:56:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:28,049 INFO L225 Difference]: With dead ends: 153 [2022-11-16 10:56:28,049 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 10:56:28,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 198 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 10:56:28,051 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 156 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:28,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 214 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 10:56:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2022-11-16 10:56:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 10:56:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2022-11-16 10:56:28,077 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 103 [2022-11-16 10:56:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:28,077 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2022-11-16 10:56:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-16 10:56:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2022-11-16 10:56:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 10:56:28,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:28,079 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:28,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:28,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:28,287 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2033872171, now seen corresponding path program 19 times [2022-11-16 10:56:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:28,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913803411] [2022-11-16 10:56:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:28,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 24 proven. 216 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 10:56:29,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:29,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913803411] [2022-11-16 10:56:29,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913803411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865644951] [2022-11-16 10:56:29,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:56:29,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:29,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:29,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:29,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 10:56:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 10:56:29,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:30,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:30,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:30,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:30,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 45 proven. 237 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-16 10:56:30,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:31,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865644951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:31,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:56:31,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 48 [2022-11-16 10:56:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600539960] [2022-11-16 10:56:31,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 10:56:31,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 10:56:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 10:56:31,161 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 48 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 43 states have internal predecessors, (120), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) [2022-11-16 10:56:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:32,718 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2022-11-16 10:56:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 10:56:32,719 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 43 states have internal predecessors, (120), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) Word has length 107 [2022-11-16 10:56:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:32,720 INFO L225 Difference]: With dead ends: 164 [2022-11-16 10:56:32,720 INFO L226 Difference]: Without dead ends: 162 [2022-11-16 10:56:32,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=677, Invalid=5329, Unknown=0, NotChecked=0, Total=6006 [2022-11-16 10:56:32,722 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 235 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:32,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 750 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1669 Invalid, 0 Unknown, 43 Unchecked, 0.9s Time] [2022-11-16 10:56:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-16 10:56:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2022-11-16 10:56:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 95 states have internal predecessors, (99), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:56:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2022-11-16 10:56:32,756 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 107 [2022-11-16 10:56:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:32,756 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2022-11-16 10:56:32,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 43 states have internal predecessors, (120), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) [2022-11-16 10:56:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2022-11-16 10:56:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 10:56:32,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:32,758 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:32,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 10:56:32,964 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1467751585, now seen corresponding path program 20 times [2022-11-16 10:56:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:32,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638381514] [2022-11-16 10:56:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 27 proven. 239 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 10:56:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:33,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638381514] [2022-11-16 10:56:33,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638381514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:33,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486902072] [2022-11-16 10:56:33,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:56:33,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:33,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:33,828 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:33,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 10:56:33,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:56:33,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:33,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 10:56:33,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:34,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:35,539 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:56:35,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:56:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 112 proven. 169 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-16 10:56:35,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:36,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:56:36,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:56:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 111 proven. 155 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 10:56:37,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486902072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:37,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:37,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 26] total 70 [2022-11-16 10:56:37,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207043909] [2022-11-16 10:56:37,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-16 10:56:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:37,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-16 10:56:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=4276, Unknown=0, NotChecked=0, Total=4830 [2022-11-16 10:56:37,780 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 70 states, 70 states have (on average 2.6142857142857143) internal successors, (183), 64 states have internal predecessors, (183), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (29), 29 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-16 10:56:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:40,626 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2022-11-16 10:56:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 10:56:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.6142857142857143) internal successors, (183), 64 states have internal predecessors, (183), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (29), 29 states have call predecessors, (29), 26 states have call successors, (29) Word has length 111 [2022-11-16 10:56:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:40,634 INFO L225 Difference]: With dead ends: 154 [2022-11-16 10:56:40,634 INFO L226 Difference]: Without dead ends: 118 [2022-11-16 10:56:40,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3389 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1437, Invalid=11219, Unknown=0, NotChecked=0, Total=12656 [2022-11-16 10:56:40,638 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 57 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:40,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 911 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 828 Invalid, 0 Unknown, 369 Unchecked, 0.5s Time] [2022-11-16 10:56:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-16 10:56:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-11-16 10:56:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:56:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2022-11-16 10:56:40,670 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 111 [2022-11-16 10:56:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:40,670 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2022-11-16 10:56:40,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.6142857142857143) internal successors, (183), 64 states have internal predecessors, (183), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (29), 29 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-16 10:56:40,678 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2022-11-16 10:56:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 10:56:40,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:40,679 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:40,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:40,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 10:56:40,885 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:40,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash -325453340, now seen corresponding path program 21 times [2022-11-16 10:56:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:40,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319576842] [2022-11-16 10:56:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:40,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:56:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 27 proven. 278 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 10:56:41,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319576842] [2022-11-16 10:56:41,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319576842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:41,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148013078] [2022-11-16 10:56:41,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:56:41,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:41,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:41,867 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:41,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 10:56:42,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 10:56:42,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:42,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 10:56:42,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:42,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:45,024 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 10:56:45,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 10:56:45,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:56:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 61 proven. 278 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 10:56:45,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:45,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:56:45,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:56:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 27 proven. 278 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 10:56:45,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148013078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:45,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:45,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 48 [2022-11-16 10:56:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752449910] [2022-11-16 10:56:45,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 10:56:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 10:56:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2080, Unknown=1, NotChecked=0, Total=2256 [2022-11-16 10:56:45,925 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 48 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 44 states have internal predecessors, (136), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-16 10:56:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:46,933 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2022-11-16 10:56:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 10:56:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 44 states have internal predecessors, (136), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) Word has length 119 [2022-11-16 10:56:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:46,935 INFO L225 Difference]: With dead ends: 158 [2022-11-16 10:56:46,935 INFO L226 Difference]: Without dead ends: 156 [2022-11-16 10:56:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 229 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=308, Invalid=3723, Unknown=1, NotChecked=0, Total=4032 [2022-11-16 10:56:46,936 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 145 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:46,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 559 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1183 Invalid, 0 Unknown, 131 Unchecked, 0.6s Time] [2022-11-16 10:56:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-16 10:56:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2022-11-16 10:56:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:56:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-11-16 10:56:46,965 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 119 [2022-11-16 10:56:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:46,965 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-11-16 10:56:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 44 states have internal predecessors, (136), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-16 10:56:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-11-16 10:56:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 10:56:46,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:46,967 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:46,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:47,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 10:56:47,175 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:47,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:47,175 INFO L85 PathProgramCache]: Analyzing trace with hash 731834289, now seen corresponding path program 22 times [2022-11-16 10:56:47,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:47,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680163972] [2022-11-16 10:56:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:47,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:56:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:56:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 28 proven. 294 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 10:56:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680163972] [2022-11-16 10:56:48,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680163972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612643015] [2022-11-16 10:56:48,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:56:48,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:48,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:48,275 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:48,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 10:56:48,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:56:48,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:48,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 10:56:48,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:48,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:49,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:49,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:49,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:49,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:49,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:49,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 124 proven. 288 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 10:56:50,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:50,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:56:50,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:56:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 24 proven. 292 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-16 10:56:50,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612643015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:50,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:50,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 26] total 54 [2022-11-16 10:56:50,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47388399] [2022-11-16 10:56:50,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:50,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 10:56:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 10:56:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2613, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 10:56:50,711 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 54 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 50 states have internal predecessors, (145), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2022-11-16 10:56:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:52,086 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2022-11-16 10:56:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 10:56:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 50 states have internal predecessors, (145), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) Word has length 123 [2022-11-16 10:56:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:52,087 INFO L225 Difference]: With dead ends: 167 [2022-11-16 10:56:52,087 INFO L226 Difference]: Without dead ends: 165 [2022-11-16 10:56:52,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 229 SyntacticMatches, 15 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=478, Invalid=4924, Unknown=0, NotChecked=0, Total=5402 [2022-11-16 10:56:52,089 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 184 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:52,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 697 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1654 Invalid, 0 Unknown, 51 Unchecked, 0.9s Time] [2022-11-16 10:56:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-16 10:56:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 125. [2022-11-16 10:56:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:56:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-11-16 10:56:52,127 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 123 [2022-11-16 10:56:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:52,127 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-11-16 10:56:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 50 states have internal predecessors, (145), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2022-11-16 10:56:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-11-16 10:56:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 10:56:52,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:52,129 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:52,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:52,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 10:56:52,335 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1033591590, now seen corresponding path program 23 times [2022-11-16 10:56:52,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:52,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064202587] [2022-11-16 10:56:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:56:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 30 proven. 305 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 10:56:53,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:53,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064202587] [2022-11-16 10:56:53,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064202587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:53,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640799312] [2022-11-16 10:56:53,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:56:53,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:53,282 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:53,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 10:56:53,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-16 10:56:53,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:53,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 10:56:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:54,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:56:54,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 36 proven. 317 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-16 10:56:54,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:54,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:56:54,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:56:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 30 proven. 305 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 10:56:55,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640799312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:55,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:56:55,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 26] total 52 [2022-11-16 10:56:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835515402] [2022-11-16 10:56:55,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:55,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 10:56:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 10:56:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2451, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 10:56:55,264 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 48 states have internal predecessors, (148), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-16 10:56:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:57,214 INFO L93 Difference]: Finished difference Result 182 states and 187 transitions. [2022-11-16 10:56:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 10:56:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 48 states have internal predecessors, (148), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) Word has length 123 [2022-11-16 10:56:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:57,216 INFO L225 Difference]: With dead ends: 182 [2022-11-16 10:56:57,216 INFO L226 Difference]: Without dead ends: 180 [2022-11-16 10:56:57,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 239 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=608, Invalid=6532, Unknown=0, NotChecked=0, Total=7140 [2022-11-16 10:56:57,218 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 350 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:57,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1050 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 10:56:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-16 10:56:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2022-11-16 10:56:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:56:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2022-11-16 10:56:57,259 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 123 [2022-11-16 10:56:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2022-11-16 10:56:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 48 states have internal predecessors, (148), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-16 10:56:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2022-11-16 10:56:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 10:56:57,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:57,261 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:57,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:57,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 10:56:57,466 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:57,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash -160177113, now seen corresponding path program 24 times [2022-11-16 10:56:57,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:57,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123329625] [2022-11-16 10:56:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:56:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:56:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:56:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:56:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:56:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:56:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:56:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:56:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:56:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:56:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:56:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:56:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 27 proven. 321 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 10:56:58,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123329625] [2022-11-16 10:56:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123329625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:56:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289398259] [2022-11-16 10:56:58,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:56:58,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:58,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:58,435 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:58,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 10:56:58,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-16 10:56:58,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:58,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 10:56:58,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:59,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:56:59,388 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 10:56:59,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:59,548 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 10:56:59,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:56:59,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:56:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 104 proven. 327 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 10:56:59,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:00,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:57:00,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:57:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 27 proven. 320 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-16 10:57:00,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289398259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:00,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:00,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 49 [2022-11-16 10:57:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128538127] [2022-11-16 10:57:00,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:00,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 10:57:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 10:57:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2170, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 10:57:00,498 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 49 states, 49 states have (on average 2.877551020408163) internal successors, (141), 45 states have internal predecessors, (141), 20 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) [2022-11-16 10:57:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:01,887 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2022-11-16 10:57:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 10:57:01,887 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.877551020408163) internal successors, (141), 45 states have internal predecessors, (141), 20 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) Word has length 127 [2022-11-16 10:57:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:01,889 INFO L225 Difference]: With dead ends: 169 [2022-11-16 10:57:01,889 INFO L226 Difference]: Without dead ends: 167 [2022-11-16 10:57:01,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 244 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=324, Invalid=3966, Unknown=0, NotChecked=0, Total=4290 [2022-11-16 10:57:01,890 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 136 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:01,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1120 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1983 Invalid, 0 Unknown, 40 Unchecked, 1.0s Time] [2022-11-16 10:57:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-16 10:57:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2022-11-16 10:57:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:57:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2022-11-16 10:57:01,923 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 127 [2022-11-16 10:57:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:01,923 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2022-11-16 10:57:01,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.877551020408163) internal successors, (141), 45 states have internal predecessors, (141), 20 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) [2022-11-16 10:57:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2022-11-16 10:57:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 10:57:01,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:01,924 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:01,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:02,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 10:57:02,127 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash 206890192, now seen corresponding path program 25 times [2022-11-16 10:57:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:02,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006811831] [2022-11-16 10:57:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:02,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 129 proven. 186 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 10:57:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006811831] [2022-11-16 10:57:02,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006811831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820767512] [2022-11-16 10:57:02,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:57:02,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:02,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:02,540 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:02,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 10:57:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:02,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 10:57:02,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 162 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 10:57:03,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 162 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 10:57:03,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820767512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:03,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:03,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2022-11-16 10:57:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588597143] [2022-11-16 10:57:03,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:03,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 10:57:03,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 10:57:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 10:57:03,464 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 35 states have internal predecessors, (122), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-16 10:57:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:03,856 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2022-11-16 10:57:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 10:57:03,856 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 35 states have internal predecessors, (122), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 127 [2022-11-16 10:57:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:03,857 INFO L225 Difference]: With dead ends: 185 [2022-11-16 10:57:03,857 INFO L226 Difference]: Without dead ends: 141 [2022-11-16 10:57:03,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 244 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 10:57:03,859 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 166 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:03,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 260 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:57:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-16 10:57:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2022-11-16 10:57:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 10:57:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2022-11-16 10:57:03,896 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 127 [2022-11-16 10:57:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:03,897 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2022-11-16 10:57:03,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 35 states have internal predecessors, (122), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-16 10:57:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2022-11-16 10:57:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 10:57:03,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:03,898 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:03,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-16 10:57:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:04,099 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 485078429, now seen corresponding path program 26 times [2022-11-16 10:57:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:04,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269642470] [2022-11-16 10:57:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:04,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 30 proven. 348 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 10:57:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:05,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269642470] [2022-11-16 10:57:05,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269642470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:05,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281886341] [2022-11-16 10:57:05,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:05,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:05,147 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:05,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 10:57:05,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:57:05,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:05,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-16 10:57:05,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:06,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:06,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2022-11-16 10:57:07,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 59 proven. 375 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-16 10:57:07,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:07,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281886341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:07,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:57:07,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 56 [2022-11-16 10:57:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276965220] [2022-11-16 10:57:07,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-16 10:57:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-16 10:57:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=3234, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 10:57:07,402 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 56 states, 55 states have (on average 2.690909090909091) internal successors, (148), 51 states have internal predecessors, (148), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-16 10:57:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:09,312 INFO L93 Difference]: Finished difference Result 196 states and 203 transitions. [2022-11-16 10:57:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 10:57:09,312 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.690909090909091) internal successors, (148), 51 states have internal predecessors, (148), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24) Word has length 131 [2022-11-16 10:57:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:09,314 INFO L225 Difference]: With dead ends: 196 [2022-11-16 10:57:09,314 INFO L226 Difference]: Without dead ends: 194 [2022-11-16 10:57:09,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2320 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=795, Invalid=7215, Unknown=0, NotChecked=0, Total=8010 [2022-11-16 10:57:09,315 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 293 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:09,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 985 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2032 Invalid, 0 Unknown, 71 Unchecked, 1.1s Time] [2022-11-16 10:57:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-16 10:57:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 141. [2022-11-16 10:57:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 115 states have internal predecessors, (119), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 10:57:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 147 transitions. [2022-11-16 10:57:09,365 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 147 transitions. Word has length 131 [2022-11-16 10:57:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:09,366 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 147 transitions. [2022-11-16 10:57:09,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.690909090909091) internal successors, (148), 51 states have internal predecessors, (148), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-16 10:57:09,366 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 147 transitions. [2022-11-16 10:57:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 10:57:09,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:09,367 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:09,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-16 10:57:09,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-16 10:57:09,573 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:09,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:09,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2003969005, now seen corresponding path program 27 times [2022-11-16 10:57:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:09,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831108525] [2022-11-16 10:57:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:09,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 33 proven. 379 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 10:57:10,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831108525] [2022-11-16 10:57:10,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831108525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115876455] [2022-11-16 10:57:10,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:57:10,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:10,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:10,632 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:10,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 10:57:11,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-16 10:57:11,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:11,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 10:57:11,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:11,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:14,466 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:57:14,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:57:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 186 proven. 226 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 10:57:14,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:16,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:57:16,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:57:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 177 proven. 235 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 10:57:17,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115876455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:17,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:17,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 30] total 80 [2022-11-16 10:57:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118268349] [2022-11-16 10:57:17,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-16 10:57:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-16 10:57:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=5650, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 10:57:17,156 INFO L87 Difference]: Start difference. First operand 141 states and 147 transitions. Second operand has 80 states, 80 states have (on average 2.8) internal successors, (224), 75 states have internal predecessors, (224), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) [2022-11-16 10:57:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:20,559 INFO L93 Difference]: Finished difference Result 185 states and 191 transitions. [2022-11-16 10:57:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 10:57:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.8) internal successors, (224), 75 states have internal predecessors, (224), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) Word has length 135 [2022-11-16 10:57:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:20,561 INFO L225 Difference]: With dead ends: 185 [2022-11-16 10:57:20,561 INFO L226 Difference]: Without dead ends: 141 [2022-11-16 10:57:20,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1744, Invalid=15812, Unknown=0, NotChecked=0, Total=17556 [2022-11-16 10:57:20,563 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 111 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:20,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 877 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 725 Invalid, 0 Unknown, 152 Unchecked, 0.4s Time] [2022-11-16 10:57:20,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-16 10:57:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-11-16 10:57:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 10:57:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 146 transitions. [2022-11-16 10:57:20,630 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 146 transitions. Word has length 135 [2022-11-16 10:57:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:20,630 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 146 transitions. [2022-11-16 10:57:20,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.8) internal successors, (224), 75 states have internal predecessors, (224), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) [2022-11-16 10:57:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 146 transitions. [2022-11-16 10:57:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-16 10:57:20,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:20,632 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:20,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:20,840 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash 566812758, now seen corresponding path program 28 times [2022-11-16 10:57:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:20,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454124667] [2022-11-16 10:57:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:20,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 33 proven. 426 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-16 10:57:22,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:22,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454124667] [2022-11-16 10:57:22,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454124667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:22,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609316116] [2022-11-16 10:57:22,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:57:22,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:22,182 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:22,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 10:57:22,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:57:22,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:22,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 10:57:22,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:23,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:23,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:57:24,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 81 proven. 441 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-16 10:57:24,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:24,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:57:24,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:57:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 33 proven. 426 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-16 10:57:25,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609316116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:25,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:25,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 30] total 62 [2022-11-16 10:57:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254917362] [2022-11-16 10:57:25,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:25,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-16 10:57:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-16 10:57:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3516, Unknown=0, NotChecked=0, Total=3782 [2022-11-16 10:57:25,030 INFO L87 Difference]: Start difference. First operand 141 states and 146 transitions. Second operand has 62 states, 60 states have (on average 2.8666666666666667) internal successors, (172), 57 states have internal predecessors, (172), 25 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2022-11-16 10:57:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:26,852 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2022-11-16 10:57:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 10:57:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 60 states have (on average 2.8666666666666667) internal successors, (172), 57 states have internal predecessors, (172), 25 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) Word has length 143 [2022-11-16 10:57:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:26,854 INFO L225 Difference]: With dead ends: 186 [2022-11-16 10:57:26,854 INFO L226 Difference]: Without dead ends: 184 [2022-11-16 10:57:26,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 275 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=450, Invalid=5870, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 10:57:26,856 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 157 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:26,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1164 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2445 Invalid, 0 Unknown, 46 Unchecked, 1.3s Time] [2022-11-16 10:57:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-16 10:57:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2022-11-16 10:57:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 153 states have (on average 1.026143790849673) internal successors, (157), 153 states have internal predecessors, (157), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 10:57:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 185 transitions. [2022-11-16 10:57:26,923 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 185 transitions. Word has length 143 [2022-11-16 10:57:26,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:26,924 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 185 transitions. [2022-11-16 10:57:26,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 60 states have (on average 2.8666666666666667) internal successors, (172), 57 states have internal predecessors, (172), 25 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2022-11-16 10:57:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 185 transitions. [2022-11-16 10:57:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 10:57:26,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:26,925 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:26,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 10:57:27,131 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 424181283, now seen corresponding path program 29 times [2022-11-16 10:57:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:27,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666041179] [2022-11-16 10:57:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:57:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 34 proven. 442 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-16 10:57:28,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666041179] [2022-11-16 10:57:28,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666041179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916088304] [2022-11-16 10:57:28,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:57:28,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:28,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:28,535 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:28,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 10:57:28,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-11-16 10:57:28,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:28,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 10:57:28,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:29,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:29,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:57:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:29,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:57:30,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:30,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:57:30,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 160 proven. 448 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-16 10:57:30,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:31,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:57:31,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:57:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 30 proven. 440 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-16 10:57:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916088304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:31,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 29] total 60 [2022-11-16 10:57:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040762637] [2022-11-16 10:57:31,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:31,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-16 10:57:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-16 10:57:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3267, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 10:57:31,527 INFO L87 Difference]: Start difference. First operand 179 states and 185 transitions. Second operand has 60 states, 59 states have (on average 2.8983050847457625) internal successors, (171), 56 states have internal predecessors, (171), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-16 10:57:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:33,119 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2022-11-16 10:57:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 10:57:33,120 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.8983050847457625) internal successors, (171), 56 states have internal predecessors, (171), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) Word has length 147 [2022-11-16 10:57:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:33,121 INFO L225 Difference]: With dead ends: 189 [2022-11-16 10:57:33,121 INFO L226 Difference]: Without dead ends: 187 [2022-11-16 10:57:33,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 279 SyntacticMatches, 15 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=478, Invalid=5684, Unknown=0, NotChecked=0, Total=6162 [2022-11-16 10:57:33,123 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 308 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:33,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 810 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1962 Invalid, 0 Unknown, 45 Unchecked, 1.1s Time] [2022-11-16 10:57:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-16 10:57:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 140. [2022-11-16 10:57:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 10:57:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2022-11-16 10:57:33,186 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 147 [2022-11-16 10:57:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:33,187 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2022-11-16 10:57:33,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.8983050847457625) internal successors, (171), 56 states have internal predecessors, (171), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-16 10:57:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2022-11-16 10:57:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 10:57:33,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:33,190 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:33,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 10:57:33,396 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1610023500, now seen corresponding path program 30 times [2022-11-16 10:57:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278600441] [2022-11-16 10:57:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 36 proven. 461 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-16 10:57:34,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:34,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278600441] [2022-11-16 10:57:34,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278600441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:34,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306262340] [2022-11-16 10:57:34,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:57:34,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:34,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:34,669 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:34,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-16 10:57:35,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-11-16 10:57:35,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:35,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 10:57:35,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:35,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:37,190 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:57:37,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:57:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 253 proven. 268 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-16 10:57:37,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:38,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:57:38,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:57:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 216 proven. 281 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-16 10:57:40,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306262340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:40,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:40,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32, 32] total 86 [2022-11-16 10:57:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523353597] [2022-11-16 10:57:40,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:40,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-16 10:57:40,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-16 10:57:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=769, Invalid=6541, Unknown=0, NotChecked=0, Total=7310 [2022-11-16 10:57:40,002 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 86 states, 86 states have (on average 2.8488372093023258) internal successors, (245), 81 states have internal predecessors, (245), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (36), 36 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-16 10:57:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:44,049 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2022-11-16 10:57:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-16 10:57:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.8488372093023258) internal successors, (245), 81 states have internal predecessors, (245), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (36), 36 states have call predecessors, (36), 34 states have call successors, (36) Word has length 147 [2022-11-16 10:57:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:44,051 INFO L225 Difference]: With dead ends: 192 [2022-11-16 10:57:44,051 INFO L226 Difference]: Without dead ends: 144 [2022-11-16 10:57:44,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5615 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1999, Invalid=18593, Unknown=0, NotChecked=0, Total=20592 [2022-11-16 10:57:44,053 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 128 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:44,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 861 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 807 Invalid, 0 Unknown, 146 Unchecked, 0.5s Time] [2022-11-16 10:57:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-16 10:57:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-16 10:57:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 10:57:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2022-11-16 10:57:44,108 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 147 [2022-11-16 10:57:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:44,109 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2022-11-16 10:57:44,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.8488372093023258) internal successors, (245), 81 states have internal predecessors, (245), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (36), 36 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-16 10:57:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2022-11-16 10:57:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-16 10:57:44,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:44,110 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:44,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-11-16 10:57:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:44,317 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1897314831, now seen corresponding path program 31 times [2022-11-16 10:57:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:44,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546025976] [2022-11-16 10:57:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:57:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 36 proven. 512 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-16 10:57:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546025976] [2022-11-16 10:57:45,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546025976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146305036] [2022-11-16 10:57:45,568 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:57:45,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:45,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:45,570 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:45,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-16 10:57:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-16 10:57:45,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:46,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:46,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:46,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:57:47,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 82 proven. 512 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-16 10:57:47,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:48,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:57:48,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:57:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 36 proven. 512 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-16 10:57:48,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146305036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:48,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:48,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 32] total 64 [2022-11-16 10:57:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57572153] [2022-11-16 10:57:48,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:48,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-16 10:57:48,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-16 10:57:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3756, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 10:57:48,425 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 60 states have internal predecessors, (185), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-16 10:57:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:50,414 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2022-11-16 10:57:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 10:57:50,414 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 60 states have internal predecessors, (185), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) Word has length 155 [2022-11-16 10:57:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:50,415 INFO L225 Difference]: With dead ends: 158 [2022-11-16 10:57:50,415 INFO L226 Difference]: Without dead ends: 156 [2022-11-16 10:57:50,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 299 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=468, Invalid=6338, Unknown=0, NotChecked=0, Total=6806 [2022-11-16 10:57:50,416 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 211 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:50,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1386 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3000 Invalid, 0 Unknown, 81 Unchecked, 1.5s Time] [2022-11-16 10:57:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-16 10:57:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2022-11-16 10:57:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 10:57:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2022-11-16 10:57:50,475 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 155 [2022-11-16 10:57:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:50,476 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2022-11-16 10:57:50,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 60 states have internal predecessors, (185), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-16 10:57:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2022-11-16 10:57:50,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 10:57:50,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:50,477 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:50,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:50,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:50,692 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:57:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1021269893, now seen corresponding path program 32 times [2022-11-16 10:57:50,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660936929] [2022-11-16 10:57:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:50,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:57:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:57:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:57:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:57:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:57:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:57:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:57:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:57:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:57:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:57:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:57:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:57:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:57:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:57:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 39 proven. 551 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-16 10:57:52,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:52,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660936929] [2022-11-16 10:57:52,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660936929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306052110] [2022-11-16 10:57:52,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:52,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:52,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:52,263 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:52,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 10:57:52,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:57:52,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:52,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 10:57:52,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:53,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:57:54,777 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:57:54,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:57:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 264 proven. 353 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-16 10:57:54,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:56,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:57:56,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:57:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 259 proven. 331 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-16 10:57:57,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306052110] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:57,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:57,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 34] total 95 [2022-11-16 10:57:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010737267] [2022-11-16 10:57:57,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:57,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-11-16 10:57:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-11-16 10:57:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=7861, Unknown=0, NotChecked=0, Total=8930 [2022-11-16 10:57:57,894 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 95 states, 93 states have (on average 2.881720430107527) internal successors, (268), 89 states have internal predecessors, (268), 39 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2022-11-16 10:58:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:03,480 INFO L93 Difference]: Finished difference Result 208 states and 213 transitions. [2022-11-16 10:58:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-16 10:58:03,481 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 93 states have (on average 2.881720430107527) internal successors, (268), 89 states have internal predecessors, (268), 39 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) Word has length 159 [2022-11-16 10:58:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:03,482 INFO L225 Difference]: With dead ends: 208 [2022-11-16 10:58:03,482 INFO L226 Difference]: Without dead ends: 156 [2022-11-16 10:58:03,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 296 SyntacticMatches, 12 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9219 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=2896, Invalid=22544, Unknown=0, NotChecked=0, Total=25440 [2022-11-16 10:58:03,484 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 173 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:03,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 951 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1055 Invalid, 0 Unknown, 242 Unchecked, 0.7s Time] [2022-11-16 10:58:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-16 10:58:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-16 10:58:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 10:58:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 160 transitions. [2022-11-16 10:58:03,538 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 160 transitions. Word has length 159 [2022-11-16 10:58:03,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:03,538 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 160 transitions. [2022-11-16 10:58:03,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 93 states have (on average 2.881720430107527) internal successors, (268), 89 states have internal predecessors, (268), 39 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2022-11-16 10:58:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 160 transitions. [2022-11-16 10:58:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-16 10:58:03,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:03,540 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:03,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 10:58:03,747 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -286096696, now seen corresponding path program 33 times [2022-11-16 10:58:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:03,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985545846] [2022-11-16 10:58:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 39 proven. 606 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-16 10:58:05,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:05,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985545846] [2022-11-16 10:58:05,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985545846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:05,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518962852] [2022-11-16 10:58:05,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:58:05,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:05,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:05,391 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:05,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-16 10:58:06,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-11-16 10:58:06,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 10:58:06,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:06,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:58:06,992 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 10:58:06,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:58:07,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 10:58:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 89 proven. 606 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-16 10:58:07,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:08,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518962852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:08,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:08,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34] total 66 [2022-11-16 10:58:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682913724] [2022-11-16 10:58:08,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:08,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-16 10:58:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-16 10:58:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=5806, Unknown=0, NotChecked=0, Total=6162 [2022-11-16 10:58:08,408 INFO L87 Difference]: Start difference. First operand 156 states and 160 transitions. Second operand has 66 states, 64 states have (on average 2.96875) internal successors, (190), 62 states have internal predecessors, (190), 28 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-16 10:58:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:11,812 INFO L93 Difference]: Finished difference Result 170 states and 174 transitions. [2022-11-16 10:58:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 10:58:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 2.96875) internal successors, (190), 62 states have internal predecessors, (190), 28 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 167 [2022-11-16 10:58:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:11,814 INFO L225 Difference]: With dead ends: 170 [2022-11-16 10:58:11,814 INFO L226 Difference]: Without dead ends: 168 [2022-11-16 10:58:11,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=707, Invalid=12175, Unknown=0, NotChecked=0, Total=12882 [2022-11-16 10:58:11,815 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 217 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1412 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3402 Invalid, 0 Unknown, 78 Unchecked, 1.8s Time] [2022-11-16 10:58:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-16 10:58:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2022-11-16 10:58:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 10:58:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2022-11-16 10:58:11,859 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 167 [2022-11-16 10:58:11,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:11,860 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2022-11-16 10:58:11,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 2.96875) internal successors, (190), 62 states have internal predecessors, (190), 28 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-16 10:58:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2022-11-16 10:58:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-16 10:58:11,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:11,862 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:11,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-11-16 10:58:12,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 10:58:12,068 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1640373182, now seen corresponding path program 34 times [2022-11-16 10:58:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:12,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980883662] [2022-11-16 10:58:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:12,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 42 proven. 649 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-16 10:58:13,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:13,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980883662] [2022-11-16 10:58:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980883662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828745482] [2022-11-16 10:58:13,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:58:13,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:13,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:13,407 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:13,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-16 10:58:13,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:58:13,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:13,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 10:58:13,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:14,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:58:15,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:58:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 75 proven. 646 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-16 10:58:16,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:16,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:58:16,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:58:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 42 proven. 649 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-16 10:58:16,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828745482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:16,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:58:16,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 34] total 68 [2022-11-16 10:58:16,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191192835] [2022-11-16 10:58:16,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:16,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-16 10:58:16,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-16 10:58:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=4287, Unknown=0, NotChecked=0, Total=4556 [2022-11-16 10:58:16,673 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand has 68 states, 67 states have (on average 3.044776119402985) internal successors, (204), 64 states have internal predecessors, (204), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-16 10:58:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:20,213 INFO L93 Difference]: Finished difference Result 240 states and 246 transitions. [2022-11-16 10:58:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-16 10:58:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 3.044776119402985) internal successors, (204), 64 states have internal predecessors, (204), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 171 [2022-11-16 10:58:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:20,214 INFO L225 Difference]: With dead ends: 240 [2022-11-16 10:58:20,215 INFO L226 Difference]: Without dead ends: 238 [2022-11-16 10:58:20,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 335 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=828, Invalid=11828, Unknown=0, NotChecked=0, Total=12656 [2022-11-16 10:58:20,216 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 679 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 3926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:20,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1675 Invalid, 3926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 10:58:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-16 10:58:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 173. [2022-11-16 10:58:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 143 states have (on average 1.020979020979021) internal successors, (146), 143 states have internal predecessors, (146), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 10:58:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 178 transitions. [2022-11-16 10:58:20,263 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 178 transitions. Word has length 171 [2022-11-16 10:58:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:20,264 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 178 transitions. [2022-11-16 10:58:20,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 3.044776119402985) internal successors, (204), 64 states have internal predecessors, (204), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-16 10:58:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 178 transitions. [2022-11-16 10:58:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-16 10:58:20,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:20,266 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:20,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-16 10:58:20,472 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1634186828, now seen corresponding path program 35 times [2022-11-16 10:58:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107301149] [2022-11-16 10:58:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 289 proven. 374 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-16 10:58:21,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107301149] [2022-11-16 10:58:21,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107301149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:21,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367146691] [2022-11-16 10:58:21,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:58:21,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:21,056 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:21,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-16 10:58:21,383 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-16 10:58:21,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:21,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 10:58:21,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 338 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-16 10:58:21,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 338 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-16 10:58:22,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367146691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:22,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:58:22,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2022-11-16 10:58:22,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982364587] [2022-11-16 10:58:22,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:22,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-16 10:58:22,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-16 10:58:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 10:58:22,517 INFO L87 Difference]: Start difference. First operand 173 states and 178 transitions. Second operand has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 10:58:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:23,108 INFO L93 Difference]: Finished difference Result 245 states and 251 transitions. [2022-11-16 10:58:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 10:58:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 175 [2022-11-16 10:58:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:23,110 INFO L225 Difference]: With dead ends: 245 [2022-11-16 10:58:23,110 INFO L226 Difference]: Without dead ends: 185 [2022-11-16 10:58:23,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 336 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=872, Invalid=2788, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 10:58:23,111 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 295 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:23,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 360 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:58:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-16 10:58:23,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2022-11-16 10:58:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 10:58:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2022-11-16 10:58:23,165 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 175 [2022-11-16 10:58:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:23,166 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2022-11-16 10:58:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 10:58:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2022-11-16 10:58:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-16 10:58:23,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:23,167 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:23,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:23,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 10:58:23,373 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash -38045055, now seen corresponding path program 36 times [2022-11-16 10:58:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:23,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72787634] [2022-11-16 10:58:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:58:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 42 proven. 708 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-16 10:58:24,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:24,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72787634] [2022-11-16 10:58:24,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72787634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:24,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036935554] [2022-11-16 10:58:24,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:58:24,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:24,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:24,687 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:24,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 10:58:25,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-11-16 10:58:25,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:25,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-16 10:58:25,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:26,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:58:27,093 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 10:58:27,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 10:58:27,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:58:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 87 proven. 747 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-16 10:58:27,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:28,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:58:28,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:58:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 42 proven. 708 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-16 10:58:28,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036935554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:28,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:58:28,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 68 [2022-11-16 10:58:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069890821] [2022-11-16 10:58:28,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:28,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-16 10:58:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-16 10:58:28,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=4301, Unknown=0, NotChecked=0, Total=4556 [2022-11-16 10:58:28,592 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 68 states, 68 states have (on average 3.0294117647058822) internal successors, (206), 64 states have internal predecessors, (206), 29 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (32), 31 states have call predecessors, (32), 29 states have call successors, (32) [2022-11-16 10:58:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:31,193 INFO L93 Difference]: Finished difference Result 243 states and 248 transitions. [2022-11-16 10:58:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-16 10:58:31,193 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.0294117647058822) internal successors, (206), 64 states have internal predecessors, (206), 29 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (32), 31 states have call predecessors, (32), 29 states have call successors, (32) Word has length 179 [2022-11-16 10:58:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:31,195 INFO L225 Difference]: With dead ends: 243 [2022-11-16 10:58:31,195 INFO L226 Difference]: Without dead ends: 241 [2022-11-16 10:58:31,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 350 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2422 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=456, Invalid=7554, Unknown=0, NotChecked=0, Total=8010 [2022-11-16 10:58:31,196 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 248 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 3782 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 3940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:31,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 2057 Invalid, 3940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3782 Invalid, 0 Unknown, 115 Unchecked, 1.9s Time] [2022-11-16 10:58:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-16 10:58:31,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 181. [2022-11-16 10:58:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 149 states have (on average 1.0201342281879195) internal successors, (152), 149 states have internal predecessors, (152), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 10:58:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 186 transitions. [2022-11-16 10:58:31,272 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 186 transitions. Word has length 179 [2022-11-16 10:58:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:31,273 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 186 transitions. [2022-11-16 10:58:31,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.0294117647058822) internal successors, (206), 64 states have internal predecessors, (206), 29 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (32), 31 states have call predecessors, (32), 29 states have call successors, (32) [2022-11-16 10:58:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 186 transitions. [2022-11-16 10:58:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-16 10:58:31,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:31,275 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:31,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:31,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:31,483 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1869254391, now seen corresponding path program 37 times [2022-11-16 10:58:31,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:31,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045480597] [2022-11-16 10:58:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:31,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:58:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 45 proven. 755 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-16 10:58:33,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:33,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045480597] [2022-11-16 10:58:33,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045480597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:33,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837325818] [2022-11-16 10:58:33,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:58:33,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:33,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:33,096 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:33,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-16 10:58:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:33,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-16 10:58:33,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:34,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:58:35,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:58:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 72 proven. 761 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-16 10:58:36,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:36,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:58:36,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:58:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 45 proven. 755 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-16 10:58:36,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837325818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:36,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:58:36,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 36] total 74 [2022-11-16 10:58:36,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310711686] [2022-11-16 10:58:36,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:36,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-16 10:58:36,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-16 10:58:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=5107, Unknown=0, NotChecked=0, Total=5402 [2022-11-16 10:58:36,792 INFO L87 Difference]: Start difference. First operand 181 states and 186 transitions. Second operand has 74 states, 72 states have (on average 3.0416666666666665) internal successors, (219), 69 states have internal predecessors, (219), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2022-11-16 10:58:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:41,164 INFO L93 Difference]: Finished difference Result 258 states and 264 transitions. [2022-11-16 10:58:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 10:58:41,164 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 72 states have (on average 3.0416666666666665) internal successors, (219), 69 states have internal predecessors, (219), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) Word has length 183 [2022-11-16 10:58:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:41,166 INFO L225 Difference]: With dead ends: 258 [2022-11-16 10:58:41,166 INFO L226 Difference]: Without dead ends: 256 [2022-11-16 10:58:41,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 359 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3875 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=897, Invalid=13865, Unknown=0, NotChecked=0, Total=14762 [2022-11-16 10:58:41,168 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 688 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 4855 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:41,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 2296 Invalid, 4983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4855 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 10:58:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-16 10:58:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 185. [2022-11-16 10:58:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 153 states have (on average 1.0196078431372548) internal successors, (156), 153 states have internal predecessors, (156), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 10:58:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2022-11-16 10:58:41,234 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 183 [2022-11-16 10:58:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:41,235 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2022-11-16 10:58:41,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 72 states have (on average 3.0416666666666665) internal successors, (219), 69 states have internal predecessors, (219), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2022-11-16 10:58:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2022-11-16 10:58:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-16 10:58:41,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:41,236 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:41,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:41,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:41,437 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash -443324860, now seen corresponding path program 38 times [2022-11-16 10:58:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:41,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008077481] [2022-11-16 10:58:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:58:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:58:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 42 proven. 771 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-16 10:58:42,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:42,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008077481] [2022-11-16 10:58:42,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008077481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:42,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375051831] [2022-11-16 10:58:42,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:58:42,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:42,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:42,926 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:42,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-16 10:58:43,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:58:43,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:43,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-16 10:58:43,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:44,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:58:44,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:44,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:58:45,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:45,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:58:46,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:58:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 138 proven. 813 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-16 10:58:46,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:46,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375051831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:46,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:46,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 41] total 74 [2022-11-16 10:58:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248674500] [2022-11-16 10:58:46,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:46,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-16 10:58:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:46,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-16 10:58:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=5591, Unknown=0, NotChecked=0, Total=6006 [2022-11-16 10:58:46,619 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand has 74 states, 73 states have (on average 2.8767123287671232) internal successors, (210), 69 states have internal predecessors, (210), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 34 states have call predecessors, (34), 32 states have call successors, (34) [2022-11-16 10:58:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:49,957 INFO L93 Difference]: Finished difference Result 269 states and 276 transitions. [2022-11-16 10:58:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 10:58:49,958 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.8767123287671232) internal successors, (210), 69 states have internal predecessors, (210), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 34 states have call predecessors, (34), 32 states have call successors, (34) Word has length 187 [2022-11-16 10:58:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:49,959 INFO L225 Difference]: With dead ends: 269 [2022-11-16 10:58:49,960 INFO L226 Difference]: Without dead ends: 267 [2022-11-16 10:58:49,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 236 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4134 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=982, Invalid=12358, Unknown=0, NotChecked=0, Total=13340 [2022-11-16 10:58:49,961 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 516 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 3760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:49,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1593 Invalid, 3760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3573 Invalid, 0 Unknown, 63 Unchecked, 2.0s Time] [2022-11-16 10:58:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-16 10:58:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 190. [2022-11-16 10:58:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 156 states have (on average 1.0192307692307692) internal successors, (159), 157 states have internal predecessors, (159), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 10:58:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 195 transitions. [2022-11-16 10:58:50,028 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 195 transitions. Word has length 187 [2022-11-16 10:58:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:50,029 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 195 transitions. [2022-11-16 10:58:50,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.8767123287671232) internal successors, (210), 69 states have internal predecessors, (210), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 34 states have call predecessors, (34), 32 states have call successors, (34) [2022-11-16 10:58:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 195 transitions. [2022-11-16 10:58:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-16 10:58:50,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:50,031 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:50,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:50,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-16 10:58:50,231 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:50,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1846642579, now seen corresponding path program 39 times [2022-11-16 10:58:50,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:50,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81694520] [2022-11-16 10:58:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:58:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 339 proven. 431 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-11-16 10:58:50,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:50,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81694520] [2022-11-16 10:58:50,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81694520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:50,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028286181] [2022-11-16 10:58:50,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:58:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:50,892 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:50,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-16 10:58:51,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-16 10:58:51,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:51,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 10:58:51,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 392 proven. 378 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-11-16 10:58:52,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 392 proven. 378 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-11-16 10:58:53,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028286181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:53,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:58:53,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2022-11-16 10:58:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371023584] [2022-11-16 10:58:53,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:53,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 10:58:53,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 10:58:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 10:58:53,015 INFO L87 Difference]: Start difference. First operand 190 states and 195 transitions. Second operand has 50 states, 50 states have (on average 3.54) internal successors, (177), 50 states have internal predecessors, (177), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-16 10:58:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:53,669 INFO L93 Difference]: Finished difference Result 265 states and 270 transitions. [2022-11-16 10:58:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 10:58:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.54) internal successors, (177), 50 states have internal predecessors, (177), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 187 [2022-11-16 10:58:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:53,671 INFO L225 Difference]: With dead ends: 265 [2022-11-16 10:58:53,671 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 10:58:53,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 359 SyntacticMatches, 30 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=986, Invalid=3174, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 10:58:53,672 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 351 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:53,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 313 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:58:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 10:58:53,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 185. [2022-11-16 10:58:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 152 states have internal predecessors, (153), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 10:58:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2022-11-16 10:58:53,757 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 187 [2022-11-16 10:58:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:53,758 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2022-11-16 10:58:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.54) internal successors, (177), 50 states have internal predecessors, (177), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-16 10:58:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2022-11-16 10:58:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 10:58:53,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:53,760 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:53,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:53,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:53,967 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1911496390, now seen corresponding path program 40 times [2022-11-16 10:58:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999311977] [2022-11-16 10:58:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:58:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:58:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:58:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:58:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:58:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:58:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:58:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:58:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:58:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:58:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:58:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:58:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:58:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:58:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:58:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:58:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:58:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 45 proven. 818 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-16 10:58:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999311977] [2022-11-16 10:58:55,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999311977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004561887] [2022-11-16 10:58:55,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:58:55,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:55,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:55,439 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:55,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-16 10:58:55,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:58:55,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:55,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 10:58:55,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:56,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:58:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:57,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:58:58,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:58:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 103 proven. 818 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-16 10:58:58,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:58,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:58:58,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:58:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 45 proven. 818 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-16 10:58:59,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004561887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:59,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:58:59,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40, 39] total 80 [2022-11-16 10:58:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905381494] [2022-11-16 10:58:59,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-16 10:58:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-16 10:58:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=5964, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 10:58:59,424 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 80 states, 78 states have (on average 2.948717948717949) internal successors, (230), 75 states have internal predecessors, (230), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2022-11-16 10:59:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:02,360 INFO L93 Difference]: Finished difference Result 198 states and 201 transitions. [2022-11-16 10:59:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-16 10:59:02,361 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 78 states have (on average 2.948717948717949) internal successors, (230), 75 states have internal predecessors, (230), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) Word has length 191 [2022-11-16 10:59:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:02,362 INFO L225 Difference]: With dead ends: 198 [2022-11-16 10:59:02,362 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 10:59:02,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 369 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=617, Invalid=10303, Unknown=0, NotChecked=0, Total=10920 [2022-11-16 10:59:02,363 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 443 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 4298 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 4434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 4298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:02,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 2202 Invalid, 4434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 4298 Invalid, 0 Unknown, 63 Unchecked, 2.1s Time] [2022-11-16 10:59:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 10:59:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2022-11-16 10:59:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 17 states have call successors, (17), 15 states have call predecessors, (17), 15 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 10:59:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2022-11-16 10:59:02,451 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 191 [2022-11-16 10:59:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:02,452 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2022-11-16 10:59:02,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 78 states have (on average 2.948717948717949) internal successors, (230), 75 states have internal predecessors, (230), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2022-11-16 10:59:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2022-11-16 10:59:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-16 10:59:02,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:02,454 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:02,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:02,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-16 10:59:02,660 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:02,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1959522608, now seen corresponding path program 41 times [2022-11-16 10:59:02,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:02,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938381722] [2022-11-16 10:59:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:02,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:59:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:59:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:59:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:59:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:59:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:59:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:59:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:59:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:59:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:59:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:59:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:59:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:59:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:59:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:59:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:59:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:59:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 48 proven. 869 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-16 10:59:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938381722] [2022-11-16 10:59:04,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938381722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448389030] [2022-11-16 10:59:04,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 10:59:04,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:04,057 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:04,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-16 10:59:04,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-11-16 10:59:04,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:04,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 10:59:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:05,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 10:59:07,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:59:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 78 proven. 875 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-11-16 10:59:07,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:07,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 10:59:07,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 10:59:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 48 proven. 869 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-16 10:59:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448389030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:07,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:59:07,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 38] total 76 [2022-11-16 10:59:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323252662] [2022-11-16 10:59:07,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:07,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-16 10:59:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-16 10:59:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=5397, Unknown=0, NotChecked=0, Total=5700 [2022-11-16 10:59:07,850 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 76 states, 75 states have (on average 3.0933333333333333) internal successors, (232), 72 states have internal predecessors, (232), 32 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2022-11-16 10:59:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:12,495 INFO L93 Difference]: Finished difference Result 272 states and 278 transitions. [2022-11-16 10:59:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-16 10:59:12,496 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 3.0933333333333333) internal successors, (232), 72 states have internal predecessors, (232), 32 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) Word has length 195 [2022-11-16 10:59:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:12,497 INFO L225 Difference]: With dead ends: 272 [2022-11-16 10:59:12,497 INFO L226 Difference]: Without dead ends: 270 [2022-11-16 10:59:12,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 383 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4262 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=938, Invalid=15064, Unknown=0, NotChecked=0, Total=16002 [2022-11-16 10:59:12,499 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 526 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:12,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2328 Invalid, 5432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 5339 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 10:59:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-16 10:59:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 197. [2022-11-16 10:59:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 10:59:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2022-11-16 10:59:12,577 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 195 [2022-11-16 10:59:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:12,577 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 202 transitions. [2022-11-16 10:59:12,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 3.0933333333333333) internal successors, (232), 72 states have internal predecessors, (232), 32 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2022-11-16 10:59:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 202 transitions. [2022-11-16 10:59:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-16 10:59:12,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:12,579 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:12,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-11-16 10:59:12,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-16 10:59:12,786 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1727141414, now seen corresponding path program 42 times [2022-11-16 10:59:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:12,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044134803] [2022-11-16 10:59:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:12,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:59:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:59:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:59:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:59:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:59:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:59:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:59:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:59:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:59:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:59:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:59:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:59:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:59:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:59:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:59:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:59:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:59:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 393 proven. 492 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-11-16 10:59:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:13,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044134803] [2022-11-16 10:59:13,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044134803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:13,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844592927] [2022-11-16 10:59:13,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 10:59:13,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:13,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:13,547 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:13,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-16 10:59:14,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-11-16 10:59:14,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:14,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 10:59:14,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 450 proven. 435 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-11-16 10:59:15,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 450 proven. 435 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-11-16 10:59:15,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844592927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:15,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:59:15,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2022-11-16 10:59:15,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038919505] [2022-11-16 10:59:15,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:15,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-16 10:59:15,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-16 10:59:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 10:59:15,920 INFO L87 Difference]: Start difference. First operand 197 states and 202 transitions. Second operand has 53 states, 53 states have (on average 3.547169811320755) internal successors, (188), 53 states have internal predecessors, (188), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-16 10:59:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:16,615 INFO L93 Difference]: Finished difference Result 277 states and 283 transitions. [2022-11-16 10:59:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 10:59:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.547169811320755) internal successors, (188), 53 states have internal predecessors, (188), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 199 [2022-11-16 10:59:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:16,617 INFO L225 Difference]: With dead ends: 277 [2022-11-16 10:59:16,617 INFO L226 Difference]: Without dead ends: 209 [2022-11-16 10:59:16,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 382 SyntacticMatches, 32 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1107, Invalid=3585, Unknown=0, NotChecked=0, Total=4692 [2022-11-16 10:59:16,617 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 334 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:16,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 421 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:59:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-16 10:59:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2022-11-16 10:59:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 10:59:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2022-11-16 10:59:16,711 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 199 [2022-11-16 10:59:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:16,711 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2022-11-16 10:59:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.547169811320755) internal successors, (188), 53 states have internal predecessors, (188), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-16 10:59:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2022-11-16 10:59:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-16 10:59:16,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:16,713 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:16,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-16 10:59:16,921 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:16,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash 785512179, now seen corresponding path program 43 times [2022-11-16 10:59:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:16,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963044924] [2022-11-16 10:59:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:59:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:59:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:59:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:59:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:59:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:59:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:59:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:59:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:59:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:59:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:59:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:59:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:59:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:59:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:59:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:59:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:59:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 10:59:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 48 proven. 936 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-16 10:59:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963044924] [2022-11-16 10:59:18,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963044924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566350337] [2022-11-16 10:59:18,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 10:59:18,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:18,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:18,568 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:18,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-16 10:59:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:18,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-16 10:59:18,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:20,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:59:20,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:59:20,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 10:59:21,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:59:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 110 proven. 936 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-16 10:59:21,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:22,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:59:22,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:59:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 48 proven. 936 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-16 10:59:22,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566350337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:22,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:59:22,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 40] total 80 [2022-11-16 10:59:22,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422955696] [2022-11-16 10:59:22,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:22,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-16 10:59:22,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-16 10:59:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=5968, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 10:59:22,660 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 80 states, 79 states have (on average 3.050632911392405) internal successors, (241), 76 states have internal predecessors, (241), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 10:59:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:25,502 INFO L93 Difference]: Finished difference Result 206 states and 210 transitions. [2022-11-16 10:59:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-16 10:59:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 3.050632911392405) internal successors, (241), 76 states have internal predecessors, (241), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) Word has length 203 [2022-11-16 10:59:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:25,504 INFO L225 Difference]: With dead ends: 206 [2022-11-16 10:59:25,505 INFO L226 Difference]: Without dead ends: 204 [2022-11-16 10:59:25,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 395 SyntacticMatches, 8 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3152 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=584, Invalid=9922, Unknown=0, NotChecked=0, Total=10506 [2022-11-16 10:59:25,506 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 388 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 4432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:25,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1603 Invalid, 4432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4250 Invalid, 0 Unknown, 96 Unchecked, 2.1s Time] [2022-11-16 10:59:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-16 10:59:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-11-16 10:59:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 18 states have call successors, (18), 16 states have call predecessors, (18), 16 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 10:59:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2022-11-16 10:59:25,573 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 203 [2022-11-16 10:59:25,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:25,574 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 203 transitions. [2022-11-16 10:59:25,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 3.050632911392405) internal successors, (241), 76 states have internal predecessors, (241), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 10:59:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 203 transitions. [2022-11-16 10:59:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 10:59:25,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:25,575 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:25,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:25,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-16 10:59:25,775 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash -14056855, now seen corresponding path program 44 times [2022-11-16 10:59:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:25,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337835167] [2022-11-16 10:59:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:59:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:59:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:59:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:59:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:59:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:59:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:59:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:59:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:59:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:59:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:59:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:59:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:59:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:59:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:59:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:59:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:59:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 10:59:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 51 proven. 991 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-16 10:59:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:27,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337835167] [2022-11-16 10:59:27,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337835167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:27,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006935300] [2022-11-16 10:59:27,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:59:27,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:27,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:27,321 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:27,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-16 10:59:27,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:59:27,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:27,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 10:59:27,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:29,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:59:31,304 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 10:59:31,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 10:59:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 480 proven. 601 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-16 10:59:31,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:34,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 10:59:34,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 10:59:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 471 proven. 571 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-16 10:59:37,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006935300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:37,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:59:37,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 43, 42] total 118 [2022-11-16 10:59:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245331513] [2022-11-16 10:59:37,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-11-16 10:59:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-11-16 10:59:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1478, Invalid=12328, Unknown=0, NotChecked=0, Total=13806 [2022-11-16 10:59:37,211 INFO L87 Difference]: Start difference. First operand 200 states and 203 transitions. Second operand has 118 states, 118 states have (on average 2.9745762711864407) internal successors, (351), 112 states have internal predecessors, (351), 50 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (53), 53 states have call predecessors, (53), 50 states have call successors, (53) [2022-11-16 10:59:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:44,730 INFO L93 Difference]: Finished difference Result 272 states and 277 transitions. [2022-11-16 10:59:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 10:59:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.9745762711864407) internal successors, (351), 112 states have internal predecessors, (351), 50 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (53), 53 states have call predecessors, (53), 50 states have call successors, (53) Word has length 207 [2022-11-16 10:59:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:44,732 INFO L225 Difference]: With dead ends: 272 [2022-11-16 10:59:44,732 INFO L226 Difference]: Without dead ends: 204 [2022-11-16 10:59:44,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 403 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11189 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=3833, Invalid=36367, Unknown=0, NotChecked=0, Total=40200 [2022-11-16 10:59:44,736 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 188 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:44,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1999 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1885 Invalid, 0 Unknown, 236 Unchecked, 1.1s Time] [2022-11-16 10:59:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-16 10:59:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-16 10:59:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 10:59:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 208 transitions. [2022-11-16 10:59:44,837 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 208 transitions. Word has length 207 [2022-11-16 10:59:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:44,838 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 208 transitions. [2022-11-16 10:59:44,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.9745762711864407) internal successors, (351), 112 states have internal predecessors, (351), 50 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (53), 53 states have call predecessors, (53), 50 states have call successors, (53) [2022-11-16 10:59:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 208 transitions. [2022-11-16 10:59:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-16 10:59:44,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:44,840 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:44,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-16 10:59:45,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:45,046 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash 488504236, now seen corresponding path program 45 times [2022-11-16 10:59:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:45,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372084490] [2022-11-16 10:59:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:45,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:59:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:59:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:59:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:59:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:59:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:59:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:59:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:59:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:59:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:59:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:59:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:59:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:59:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:59:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:59:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:59:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:59:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 10:59:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 10:59:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 51 proven. 1062 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-16 10:59:46,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372084490] [2022-11-16 10:59:46,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372084490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911212230] [2022-11-16 10:59:46,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:59:46,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:46,824 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:46,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-16 10:59:47,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-11-16 10:59:47,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:47,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 10:59:47,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:49,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:59:49,734 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 10:59:49,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 10:59:50,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 10:59:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 117 proven. 1062 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-16 10:59:50,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:51,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 10:59:51,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 10:59:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 51 proven. 1062 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-16 10:59:51,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911212230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:51,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:59:51,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 80 [2022-11-16 10:59:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457888540] [2022-11-16 10:59:51,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:51,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-16 10:59:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-16 10:59:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=6017, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 10:59:51,755 INFO L87 Difference]: Start difference. First operand 204 states and 208 transitions. Second operand has 80 states, 80 states have (on average 3.1) internal successors, (248), 76 states have internal predecessors, (248), 35 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 37 states have call predecessors, (37), 35 states have call successors, (37) [2022-11-16 10:59:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:54,823 INFO L93 Difference]: Finished difference Result 286 states and 291 transitions. [2022-11-16 10:59:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-16 10:59:54,824 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.1) internal successors, (248), 76 states have internal predecessors, (248), 35 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 37 states have call predecessors, (37), 35 states have call successors, (37) Word has length 215 [2022-11-16 10:59:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:54,825 INFO L225 Difference]: With dead ends: 286 [2022-11-16 10:59:54,825 INFO L226 Difference]: Without dead ends: 284 [2022-11-16 10:59:54,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 421 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3164 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=490, Invalid=10016, Unknown=0, NotChecked=0, Total=10506 [2022-11-16 10:59:54,827 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 339 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:54,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1907 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4392 Invalid, 0 Unknown, 168 Unchecked, 2.3s Time] [2022-11-16 10:59:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-16 10:59:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 217. [2022-11-16 10:59:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 179 states have (on average 1.0167597765363128) internal successors, (182), 179 states have internal predecessors, (182), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 10:59:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 222 transitions. [2022-11-16 10:59:54,967 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 222 transitions. Word has length 215 [2022-11-16 10:59:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:54,968 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 222 transitions. [2022-11-16 10:59:54,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.1) internal successors, (248), 76 states have internal predecessors, (248), 35 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 37 states have call predecessors, (37), 35 states have call successors, (37) [2022-11-16 10:59:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 222 transitions. [2022-11-16 10:59:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-16 10:59:54,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:54,970 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:54,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-16 10:59:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:55,178 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash 704807586, now seen corresponding path program 46 times [2022-11-16 10:59:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:55,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111272357] [2022-11-16 10:59:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 10:59:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 10:59:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 10:59:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 10:59:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 10:59:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 10:59:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 10:59:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 10:59:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 10:59:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 10:59:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 10:59:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 10:59:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 10:59:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 10:59:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 10:59:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 10:59:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 10:59:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 10:59:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 10:59:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 54 proven. 1121 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-16 10:59:57,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:57,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111272357] [2022-11-16 10:59:57,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111272357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:59:57,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030858046] [2022-11-16 10:59:57,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 10:59:57,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:57,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:57,383 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:57,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-16 10:59:57,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 10:59:57,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:57,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 10:59:57,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:59,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:00:00,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:00:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 87 proven. 1130 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-11-16 11:00:01,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:01,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 11:00:01,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 11:00:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 54 proven. 1121 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-16 11:00:01,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030858046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:01,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:01,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 42] total 84 [2022-11-16 11:00:01,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608008386] [2022-11-16 11:00:01,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-16 11:00:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-16 11:00:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=6635, Unknown=0, NotChecked=0, Total=6972 [2022-11-16 11:00:01,823 INFO L87 Difference]: Start difference. First operand 217 states and 222 transitions. Second operand has 84 states, 83 states have (on average 3.1325301204819276) internal successors, (260), 80 states have internal predecessors, (260), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2022-11-16 11:00:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:07,159 INFO L93 Difference]: Finished difference Result 306 states and 312 transitions. [2022-11-16 11:00:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-16 11:00:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 3.1325301204819276) internal successors, (260), 80 states have internal predecessors, (260), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) Word has length 219 [2022-11-16 11:00:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:07,162 INFO L225 Difference]: With dead ends: 306 [2022-11-16 11:00:07,162 INFO L226 Difference]: Without dead ends: 304 [2022-11-16 11:00:07,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5313 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1048, Invalid=18692, Unknown=0, NotChecked=0, Total=19740 [2022-11-16 11:00:07,164 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 490 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 6097 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 6207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 6097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:07,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 3187 Invalid, 6207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 6097 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:00:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-16 11:00:07,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 221. [2022-11-16 11:00:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 183 states have (on average 1.0163934426229508) internal successors, (186), 183 states have internal predecessors, (186), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:00:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 226 transitions. [2022-11-16 11:00:07,261 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 226 transitions. Word has length 219 [2022-11-16 11:00:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:07,261 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 226 transitions. [2022-11-16 11:00:07,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 3.1325301204819276) internal successors, (260), 80 states have internal predecessors, (260), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2022-11-16 11:00:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 226 transitions. [2022-11-16 11:00:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-16 11:00:07,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:07,262 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:07,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:07,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:07,463 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:07,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 762479087, now seen corresponding path program 47 times [2022-11-16 11:00:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:07,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233510420] [2022-11-16 11:00:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:00:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:00:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:00:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:00:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:00:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:00:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:00:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:00:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:00:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:00:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:00:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:00:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:00:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:00:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:00:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:00:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:00:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:00:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:00:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:00:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 51 proven. 1137 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-16 11:00:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:09,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233510420] [2022-11-16 11:00:09,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233510420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:09,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83386795] [2022-11-16 11:00:09,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:00:09,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:09,452 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:09,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-16 11:00:09,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-11-16 11:00:09,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:00:09,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-16 11:00:09,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:11,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:00:11,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:11,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:00:12,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:12,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:00:13,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:00:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 210 proven. 1149 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-11-16 11:00:13,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:13,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:00:13,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:00:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 51 proven. 1136 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2022-11-16 11:00:14,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83386795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:14,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:14,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44, 43] total 86 [2022-11-16 11:00:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721555158] [2022-11-16 11:00:14,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:14,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-16 11:00:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-16 11:00:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=6923, Unknown=0, NotChecked=0, Total=7310 [2022-11-16 11:00:14,475 INFO L87 Difference]: Start difference. First operand 221 states and 226 transitions. Second operand has 86 states, 85 states have (on average 3.0941176470588236) internal successors, (263), 82 states have internal predecessors, (263), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-11-16 11:00:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:17,842 INFO L93 Difference]: Finished difference Result 297 states and 301 transitions. [2022-11-16 11:00:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-16 11:00:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 3.0941176470588236) internal successors, (263), 82 states have internal predecessors, (263), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) Word has length 223 [2022-11-16 11:00:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:17,843 INFO L225 Difference]: With dead ends: 297 [2022-11-16 11:00:17,843 INFO L226 Difference]: Without dead ends: 295 [2022-11-16 11:00:17,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 433 SyntacticMatches, 11 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3875 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=645, Invalid=11565, Unknown=0, NotChecked=0, Total=12210 [2022-11-16 11:00:17,845 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 345 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:17,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 2299 Invalid, 5252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 5103 Invalid, 0 Unknown, 70 Unchecked, 2.5s Time] [2022-11-16 11:00:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-16 11:00:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 225. [2022-11-16 11:00:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 186 states have (on average 1.0161290322580645) internal successors, (189), 186 states have internal predecessors, (189), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:00:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 229 transitions. [2022-11-16 11:00:17,983 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 229 transitions. Word has length 223 [2022-11-16 11:00:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:17,984 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 229 transitions. [2022-11-16 11:00:17,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 3.0941176470588236) internal successors, (263), 82 states have internal predecessors, (263), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-11-16 11:00:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2022-11-16 11:00:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-16 11:00:17,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:17,985 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:17,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:18,193 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1833001320, now seen corresponding path program 48 times [2022-11-16 11:00:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761620939] [2022-11-16 11:00:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:18,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:00:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:00:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:00:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:00:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:00:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:00:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:00:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:00:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:00:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:00:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:00:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:00:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:00:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:00:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:00:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:00:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:00:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:00:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:00:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 513 proven. 626 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-16 11:00:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761620939] [2022-11-16 11:00:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761620939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041334592] [2022-11-16 11:00:19,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:00:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:19,084 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:19,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-16 11:00:19,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-11-16 11:00:19,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:00:19,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 11:00:19,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 578 proven. 561 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-16 11:00:20,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 578 proven. 561 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-16 11:00:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041334592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:21,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:21,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2022-11-16 11:00:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856779651] [2022-11-16 11:00:21,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 11:00:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 11:00:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2022-11-16 11:00:21,542 INFO L87 Difference]: Start difference. First operand 225 states and 229 transitions. Second operand has 59 states, 59 states have (on average 3.559322033898305) internal successors, (210), 59 states have internal predecessors, (210), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-16 11:00:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:22,422 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2022-11-16 11:00:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:00:22,423 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.559322033898305) internal successors, (210), 59 states have internal predecessors, (210), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 223 [2022-11-16 11:00:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:22,424 INFO L225 Difference]: With dead ends: 313 [2022-11-16 11:00:22,424 INFO L226 Difference]: Without dead ends: 237 [2022-11-16 11:00:22,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 428 SyntacticMatches, 36 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1370, Invalid=4482, Unknown=0, NotChecked=0, Total=5852 [2022-11-16 11:00:22,425 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 384 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:22,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 465 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:00:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-16 11:00:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 220. [2022-11-16 11:00:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 181 states have (on average 1.011049723756906) internal successors, (183), 181 states have internal predecessors, (183), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:00:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 223 transitions. [2022-11-16 11:00:22,562 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 223 transitions. Word has length 223 [2022-11-16 11:00:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:22,563 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 223 transitions. [2022-11-16 11:00:22,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.559322033898305) internal successors, (210), 59 states have internal predecessors, (210), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-16 11:00:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 223 transitions. [2022-11-16 11:00:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-16 11:00:22,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:22,565 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:22,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:22,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-11-16 11:00:22,773 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1414803301, now seen corresponding path program 49 times [2022-11-16 11:00:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836248125] [2022-11-16 11:00:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:00:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:00:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:00:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:00:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:00:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:00:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:00:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:00:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:00:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:00:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:00:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:00:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:00:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:00:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:00:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:00:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:00:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:00:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:00:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:00:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 54 proven. 1196 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-16 11:00:24,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836248125] [2022-11-16 11:00:24,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836248125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289810504] [2022-11-16 11:00:24,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:00:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:24,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:24,732 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:24,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-16 11:00:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:25,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-16 11:00:25,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:26,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:00:27,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:27,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:00:28,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:00:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 154 proven. 1208 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-11-16 11:00:28,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:29,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:00:29,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:00:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 54 proven. 1196 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-16 11:00:29,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289810504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:29,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:29,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 45, 44] total 88 [2022-11-16 11:00:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618453459] [2022-11-16 11:00:29,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:29,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-11-16 11:00:29,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-11-16 11:00:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=7266, Unknown=0, NotChecked=0, Total=7656 [2022-11-16 11:00:29,625 INFO L87 Difference]: Start difference. First operand 220 states and 223 transitions. Second operand has 88 states, 87 states have (on average 3.0919540229885056) internal successors, (269), 84 states have internal predecessors, (269), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-11-16 11:00:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:33,384 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2022-11-16 11:00:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-16 11:00:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 3.0919540229885056) internal successors, (269), 84 states have internal predecessors, (269), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) Word has length 227 [2022-11-16 11:00:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:33,386 INFO L225 Difference]: With dead ends: 230 [2022-11-16 11:00:33,386 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 11:00:33,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 443 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3743 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=642, Invalid=12014, Unknown=0, NotChecked=0, Total=12656 [2022-11-16 11:00:33,387 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 295 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 5696 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 5883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:33,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 2653 Invalid, 5883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5696 Invalid, 0 Unknown, 112 Unchecked, 2.9s Time] [2022-11-16 11:00:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 11:00:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-11-16 11:00:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 185 states have internal predecessors, (187), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:00:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 227 transitions. [2022-11-16 11:00:33,508 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 227 transitions. Word has length 227 [2022-11-16 11:00:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:33,509 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 227 transitions. [2022-11-16 11:00:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 3.0919540229885056) internal successors, (269), 84 states have internal predecessors, (269), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-11-16 11:00:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 227 transitions. [2022-11-16 11:00:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-16 11:00:33,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:33,511 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:33,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:33,724 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1357499941, now seen corresponding path program 50 times [2022-11-16 11:00:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:33,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814917791] [2022-11-16 11:00:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:00:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:00:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:00:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:00:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:00:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:00:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:00:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:00:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:00:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:00:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:00:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:00:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:00:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:00:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:00:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:00:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:00:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:00:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:00:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:00:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 57 proven. 1259 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-16 11:00:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:35,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814917791] [2022-11-16 11:00:35,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814917791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714405818] [2022-11-16 11:00:35,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:00:35,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:35,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:35,786 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:35,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-16 11:00:36,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:00:36,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:00:36,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 11:00:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:37,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:00:40,483 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 11:00:40,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 11:00:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 612 proven. 749 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-11-16 11:00:40,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:44,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 11:00:44,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 11:00:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 601 proven. 715 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-16 11:00:47,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714405818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:47,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47, 46] total 131 [2022-11-16 11:00:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525835325] [2022-11-16 11:00:47,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-11-16 11:00:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-11-16 11:00:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1782, Invalid=15247, Unknown=1, NotChecked=0, Total=17030 [2022-11-16 11:00:47,764 INFO L87 Difference]: Start difference. First operand 224 states and 227 transitions. Second operand has 131 states, 130 states have (on average 3.023076923076923) internal successors, (393), 125 states have internal predecessors, (393), 56 states have call successors, (57), 1 states have call predecessors, (57), 2 states have return successors, (59), 59 states have call predecessors, (59), 56 states have call successors, (59) [2022-11-16 11:00:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:57,461 INFO L93 Difference]: Finished difference Result 304 states and 309 transitions. [2022-11-16 11:00:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-16 11:00:57,462 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 3.023076923076923) internal successors, (393), 125 states have internal predecessors, (393), 56 states have call successors, (57), 1 states have call predecessors, (57), 2 states have return successors, (59), 59 states have call predecessors, (59), 56 states have call successors, (59) Word has length 231 [2022-11-16 11:00:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:57,463 INFO L225 Difference]: With dead ends: 304 [2022-11-16 11:00:57,463 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 11:00:57,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 451 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13978 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=4648, Invalid=45303, Unknown=1, NotChecked=0, Total=49952 [2022-11-16 11:00:57,465 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 261 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 327 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:57,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 2424 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2702 Invalid, 0 Unknown, 327 Unchecked, 1.6s Time] [2022-11-16 11:00:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 11:00:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-11-16 11:00:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 11:00:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2022-11-16 11:00:57,613 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 231 [2022-11-16 11:00:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:57,614 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2022-11-16 11:00:57,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 3.023076923076923) internal successors, (393), 125 states have internal predecessors, (393), 56 states have call successors, (57), 1 states have call predecessors, (57), 2 states have return successors, (59), 59 states have call predecessors, (59), 56 states have call successors, (59) [2022-11-16 11:00:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2022-11-16 11:00:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-16 11:00:57,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:57,616 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:57,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:57,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-11-16 11:00:57,823 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1642868194, now seen corresponding path program 51 times [2022-11-16 11:00:57,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:57,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125401794] [2022-11-16 11:00:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:57,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:00:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:00:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:00:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:00:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:00:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:00:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:00:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:00:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:00:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:00:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:00:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:00:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:00:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:00:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:00:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:00:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:00:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:01:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:01:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:01:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:01:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 57 proven. 1338 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-11-16 11:01:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:00,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125401794] [2022-11-16 11:01:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125401794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:00,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4646235] [2022-11-16 11:01:00,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:01:00,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:00,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:00,017 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:00,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-16 11:01:02,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-16 11:01:02,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:02,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 11:01:02,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:03,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:01:05,854 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 11:01:05,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-11-16 11:01:07,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-11-16 11:01:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 131 proven. 1338 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-16 11:01:07,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:07,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4646235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:07,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:01:07,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 67 [2022-11-16 11:01:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786839895] [2022-11-16 11:01:07,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:07,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-16 11:01:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-16 11:01:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=4445, Unknown=1, NotChecked=0, Total=4692 [2022-11-16 11:01:07,387 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 67 states, 67 states have (on average 3.1940298507462686) internal successors, (214), 64 states have internal predecessors, (214), 21 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-16 11:01:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:11,186 INFO L93 Difference]: Finished difference Result 318 states and 323 transitions. [2022-11-16 11:01:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-16 11:01:11,187 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.1940298507462686) internal successors, (214), 64 states have internal predecessors, (214), 21 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) Word has length 239 [2022-11-16 11:01:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:11,187 INFO L225 Difference]: With dead ends: 318 [2022-11-16 11:01:11,187 INFO L226 Difference]: Without dead ends: 316 [2022-11-16 11:01:11,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 324 SyntacticMatches, 12 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=464, Invalid=8465, Unknown=1, NotChecked=0, Total=8930 [2022-11-16 11:01:11,188 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 187 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 5256 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 5524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 5256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:11,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 2215 Invalid, 5524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 5256 Invalid, 0 Unknown, 229 Unchecked, 2.9s Time] [2022-11-16 11:01:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-16 11:01:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 241. [2022-11-16 11:01:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 199 states have (on average 1.015075376884422) internal successors, (202), 199 states have internal predecessors, (202), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:01:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 246 transitions. [2022-11-16 11:01:11,275 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 246 transitions. Word has length 239 [2022-11-16 11:01:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:11,276 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 246 transitions. [2022-11-16 11:01:11,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.1940298507462686) internal successors, (214), 64 states have internal predecessors, (214), 21 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-16 11:01:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 246 transitions. [2022-11-16 11:01:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-16 11:01:11,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:11,277 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:11,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-11-16 11:01:11,479 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash -161230828, now seen corresponding path program 52 times [2022-11-16 11:01:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:11,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138346512] [2022-11-16 11:01:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:01:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:01:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:01:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:01:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:01:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:01:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:01:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:01:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:01:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:01:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:01:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:01:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:01:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:01:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:01:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:01:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:01:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:01:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:01:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2191 backedges. 60 proven. 1405 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-11-16 11:01:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:13,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138346512] [2022-11-16 11:01:13,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138346512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:13,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944773856] [2022-11-16 11:01:13,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:01:13,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:13,527 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:13,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-16 11:01:14,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:01:14,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:14,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 11:01:14,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:16,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:01:17,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:01:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2191 backedges. 93 proven. 1420 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-11-16 11:01:17,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:18,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 11:01:18,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 11:01:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2191 backedges. 60 proven. 1405 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-11-16 11:01:18,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944773856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:18,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:18,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 46] total 92 [2022-11-16 11:01:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984806220] [2022-11-16 11:01:18,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:18,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-11-16 11:01:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-11-16 11:01:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=8001, Unknown=0, NotChecked=0, Total=8372 [2022-11-16 11:01:18,821 INFO L87 Difference]: Start difference. First operand 241 states and 246 transitions. Second operand has 92 states, 91 states have (on average 3.1648351648351647) internal successors, (288), 88 states have internal predecessors, (288), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2022-11-16 11:01:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:25,478 INFO L93 Difference]: Finished difference Result 338 states and 344 transitions. [2022-11-16 11:01:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-16 11:01:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 3.1648351648351647) internal successors, (288), 88 states have internal predecessors, (288), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) Word has length 243 [2022-11-16 11:01:25,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:25,481 INFO L225 Difference]: With dead ends: 338 [2022-11-16 11:01:25,481 INFO L226 Difference]: Without dead ends: 336 [2022-11-16 11:01:25,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6480 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1158, Invalid=22712, Unknown=0, NotChecked=0, Total=23870 [2022-11-16 11:01:25,483 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 629 mSDsluCounter, 3599 mSDsCounter, 0 mSdLazyCounter, 7721 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 7837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 7721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:25,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 3673 Invalid, 7837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 7721 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 11:01:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-16 11:01:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 245. [2022-11-16 11:01:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 203 states have internal predecessors, (206), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:01:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 250 transitions. [2022-11-16 11:01:25,643 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 250 transitions. Word has length 243 [2022-11-16 11:01:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:25,644 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 250 transitions. [2022-11-16 11:01:25,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 3.1648351648351647) internal successors, (288), 88 states have internal predecessors, (288), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2022-11-16 11:01:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 250 transitions. [2022-11-16 11:01:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-16 11:01:25,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:25,646 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:25,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:25,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:25,858 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -749043871, now seen corresponding path program 53 times [2022-11-16 11:01:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:25,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48980112] [2022-11-16 11:01:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:01:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:01:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:01:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:01:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:01:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:01:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:01:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:01:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:01:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:01:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:01:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:01:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:01:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:01:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:01:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:01:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:01:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:01:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:01:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:01:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 57 proven. 1421 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 11:01:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48980112] [2022-11-16 11:01:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48980112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617199857] [2022-11-16 11:01:28,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:01:28,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:28,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:28,125 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:28,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-16 11:01:28,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-16 11:01:28,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:28,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-16 11:01:28,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:30,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:01:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:31,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:01:31,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:31,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:01:33,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:01:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 223 proven. 1448 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-11-16 11:01:33,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:33,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:01:33,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:01:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 57 proven. 1420 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-16 11:01:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617199857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:34,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:34,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 48, 47] total 94 [2022-11-16 11:01:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725147146] [2022-11-16 11:01:34,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-16 11:01:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-16 11:01:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=8317, Unknown=0, NotChecked=0, Total=8742 [2022-11-16 11:01:34,148 INFO L87 Difference]: Start difference. First operand 245 states and 250 transitions. Second operand has 94 states, 93 states have (on average 3.129032258064516) internal successors, (291), 90 states have internal predecessors, (291), 42 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-16 11:01:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:38,296 INFO L93 Difference]: Finished difference Result 329 states and 333 transitions. [2022-11-16 11:01:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-16 11:01:38,296 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.129032258064516) internal successors, (291), 90 states have internal predecessors, (291), 42 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) Word has length 247 [2022-11-16 11:01:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:38,297 INFO L225 Difference]: With dead ends: 329 [2022-11-16 11:01:38,297 INFO L226 Difference]: Without dead ends: 327 [2022-11-16 11:01:38,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 481 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4596 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=703, Invalid=13817, Unknown=0, NotChecked=0, Total=14520 [2022-11-16 11:01:38,298 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 463 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 6288 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 6498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 6288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:38,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 2375 Invalid, 6498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 6288 Invalid, 0 Unknown, 111 Unchecked, 3.1s Time] [2022-11-16 11:01:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-16 11:01:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 249. [2022-11-16 11:01:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 206 states have (on average 1.0145631067961165) internal successors, (209), 206 states have internal predecessors, (209), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:01:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 253 transitions. [2022-11-16 11:01:38,427 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 253 transitions. Word has length 247 [2022-11-16 11:01:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:38,427 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 253 transitions. [2022-11-16 11:01:38,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.129032258064516) internal successors, (291), 90 states have internal predecessors, (291), 42 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-16 11:01:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 253 transitions. [2022-11-16 11:01:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-16 11:01:38,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:38,429 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:38,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:38,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:38,638 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:38,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1980243190, now seen corresponding path program 54 times [2022-11-16 11:01:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:38,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680205318] [2022-11-16 11:01:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:01:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:01:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:01:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:01:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:01:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:01:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:01:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:01:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:01:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:01:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:01:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:01:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:01:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:01:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:01:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:01:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:01:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:01:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:01:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 649 proven. 776 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-11-16 11:01:39,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:39,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680205318] [2022-11-16 11:01:39,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680205318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:39,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751516765] [2022-11-16 11:01:39,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:01:39,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:39,838 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:39,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-16 11:01:40,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-16 11:01:40,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:40,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 11:01:40,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 722 proven. 703 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-11-16 11:01:42,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 722 proven. 703 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-11-16 11:01:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751516765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:42,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:42,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2022-11-16 11:01:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507144895] [2022-11-16 11:01:42,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-16 11:01:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-16 11:01:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 11:01:42,899 INFO L87 Difference]: Start difference. First operand 249 states and 253 transitions. Second operand has 65 states, 65 states have (on average 3.5692307692307694) internal successors, (232), 65 states have internal predecessors, (232), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2022-11-16 11:01:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:43,858 INFO L93 Difference]: Finished difference Result 345 states and 350 transitions. [2022-11-16 11:01:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:01:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.5692307692307694) internal successors, (232), 65 states have internal predecessors, (232), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) Word has length 247 [2022-11-16 11:01:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:43,860 INFO L225 Difference]: With dead ends: 345 [2022-11-16 11:01:43,860 INFO L226 Difference]: Without dead ends: 261 [2022-11-16 11:01:43,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 474 SyntacticMatches, 40 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1661, Invalid=5479, Unknown=0, NotChecked=0, Total=7140 [2022-11-16 11:01:43,861 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 457 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:43,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 430 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:01:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-16 11:01:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 244. [2022-11-16 11:01:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 201 states have internal predecessors, (203), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:01:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 247 transitions. [2022-11-16 11:01:43,973 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 247 transitions. Word has length 247 [2022-11-16 11:01:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 247 transitions. [2022-11-16 11:01:43,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.5692307692307694) internal successors, (232), 65 states have internal predecessors, (232), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2022-11-16 11:01:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 247 transitions. [2022-11-16 11:01:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-16 11:01:43,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:43,975 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:43,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:44,179 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1573116969, now seen corresponding path program 55 times [2022-11-16 11:01:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:44,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512171587] [2022-11-16 11:01:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:01:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:01:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:01:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:01:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:01:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:01:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:01:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:01:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:01:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:01:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:01:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:01:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:01:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:01:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:01:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:01:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:01:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:01:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:01:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:01:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 60 proven. 1488 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 11:01:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:46,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512171587] [2022-11-16 11:01:46,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512171587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:46,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179576180] [2022-11-16 11:01:46,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:01:46,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:46,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:46,317 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:46,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-16 11:01:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:46,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-16 11:01:46,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:48,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:01:48,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:48,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:01:50,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:01:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 150 proven. 1524 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-11-16 11:01:50,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:51,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:01:51,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:01:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 60 proven. 1488 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 11:01:51,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179576180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:51,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:51,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49, 48] total 96 [2022-11-16 11:01:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681453686] [2022-11-16 11:01:51,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:51,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-16 11:01:51,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-16 11:01:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=8692, Unknown=0, NotChecked=0, Total=9120 [2022-11-16 11:01:51,874 INFO L87 Difference]: Start difference. First operand 244 states and 247 transitions. Second operand has 96 states, 95 states have (on average 3.126315789473684) internal successors, (297), 92 states have internal predecessors, (297), 42 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-16 11:01:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:56,435 INFO L93 Difference]: Finished difference Result 254 states and 258 transitions. [2022-11-16 11:01:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-16 11:01:56,435 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.126315789473684) internal successors, (297), 92 states have internal predecessors, (297), 42 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) Word has length 251 [2022-11-16 11:01:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:56,437 INFO L225 Difference]: With dead ends: 254 [2022-11-16 11:01:56,437 INFO L226 Difference]: Without dead ends: 252 [2022-11-16 11:01:56,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 491 SyntacticMatches, 7 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4448 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=700, Invalid=14306, Unknown=0, NotChecked=0, Total=15006 [2022-11-16 11:01:56,438 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 483 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 7251 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 7416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 7251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:56,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 3437 Invalid, 7416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 7251 Invalid, 0 Unknown, 83 Unchecked, 3.6s Time] [2022-11-16 11:01:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-16 11:01:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-11-16 11:01:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 205 states have (on average 1.0097560975609756) internal successors, (207), 205 states have internal predecessors, (207), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:01:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 251 transitions. [2022-11-16 11:01:56,534 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 251 transitions. Word has length 251 [2022-11-16 11:01:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:56,534 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 251 transitions. [2022-11-16 11:01:56,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.126315789473684) internal successors, (297), 92 states have internal predecessors, (297), 42 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-16 11:01:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 251 transitions. [2022-11-16 11:01:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-16 11:01:56,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:56,535 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:56,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:56,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-16 11:01:56,736 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash 640326989, now seen corresponding path program 56 times [2022-11-16 11:01:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:56,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494911964] [2022-11-16 11:01:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:56,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:01:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:01:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:01:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:01:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:01:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:01:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:01:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:01:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:01:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:01:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:01:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:01:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:01:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:01:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:01:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:01:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:01:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:01:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:01:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:01:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:01:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:01:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 63 proven. 1559 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 11:01:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494911964] [2022-11-16 11:01:58,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494911964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367703427] [2022-11-16 11:01:58,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:01:58,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:58,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:58,935 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:58,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-16 11:01:59,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:01:59,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:01:59,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 11:01:59,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:02:01,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:02:04,424 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 11:02:04,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 11:02:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 760 proven. 913 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-11-16 11:02:04,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:02:08,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 11:02:08,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 11:02:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 747 proven. 875 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 11:02:12,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367703427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:02:12,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:02:12,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 51, 50] total 142 [2022-11-16 11:02:12,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132934890] [2022-11-16 11:02:12,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:02:12,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2022-11-16 11:02:12,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2022-11-16 11:02:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2108, Invalid=17914, Unknown=0, NotChecked=0, Total=20022 [2022-11-16 11:02:12,972 INFO L87 Difference]: Start difference. First operand 248 states and 251 transitions. Second operand has 142 states, 142 states have (on average 3.063380281690141) internal successors, (435), 136 states have internal predecessors, (435), 62 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (65), 65 states have call predecessors, (65), 62 states have call successors, (65) [2022-11-16 11:02:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:24,300 INFO L93 Difference]: Finished difference Result 336 states and 341 transitions. [2022-11-16 11:02:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-11-16 11:02:24,301 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 3.063380281690141) internal successors, (435), 136 states have internal predecessors, (435), 62 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (65), 65 states have call predecessors, (65), 62 states have call successors, (65) Word has length 255 [2022-11-16 11:02:24,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:24,302 INFO L225 Difference]: With dead ends: 336 [2022-11-16 11:02:24,302 INFO L226 Difference]: Without dead ends: 252 [2022-11-16 11:02:24,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16799 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=5487, Invalid=54293, Unknown=0, NotChecked=0, Total=59780 [2022-11-16 11:02:24,305 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 317 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:24,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2119 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2396 Invalid, 0 Unknown, 331 Unchecked, 1.6s Time] [2022-11-16 11:02:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-16 11:02:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-11-16 11:02:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 11:02:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 256 transitions. [2022-11-16 11:02:24,446 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 256 transitions. Word has length 255 [2022-11-16 11:02:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:24,447 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 256 transitions. [2022-11-16 11:02:24,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 3.063380281690141) internal successors, (435), 136 states have internal predecessors, (435), 62 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (65), 65 states have call predecessors, (65), 62 states have call successors, (65) [2022-11-16 11:02:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 256 transitions. [2022-11-16 11:02:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-16 11:02:24,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:24,449 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:24,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-16 11:02:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:02:24,656 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash -152279920, now seen corresponding path program 57 times [2022-11-16 11:02:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:24,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721712212] [2022-11-16 11:02:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:02:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:02:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:02:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:02:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:02:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:02:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:02:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:02:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:02:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:02:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:02:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:02:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:02:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:02:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:02:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:02:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:02:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:02:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:02:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:02:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:02:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:02:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:02:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 63 proven. 1646 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-16 11:02:27,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:27,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721712212] [2022-11-16 11:02:27,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721712212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:02:27,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615126036] [2022-11-16 11:02:27,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:02:27,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:02:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:02:27,279 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:02:27,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-16 11:02:30,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-11-16 11:02:30,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:02:30,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 11:02:30,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:02:32,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:02:32,817 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 11:02:32,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 11:02:34,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 11:02:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 145 proven. 1646 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 11:02:34,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:02:34,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:02:34,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:02:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 63 proven. 1646 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-16 11:02:35,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615126036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:02:35,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:02:35,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 98 [2022-11-16 11:02:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443288943] [2022-11-16 11:02:35,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:02:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-16 11:02:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-16 11:02:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=9130, Unknown=0, NotChecked=0, Total=9506 [2022-11-16 11:02:35,524 INFO L87 Difference]: Start difference. First operand 252 states and 256 transitions. Second operand has 98 states, 97 states have (on average 3.1443298969072164) internal successors, (305), 93 states have internal predecessors, (305), 44 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (46), 46 states have call predecessors, (46), 44 states have call successors, (46) [2022-11-16 11:02:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:39,852 INFO L93 Difference]: Finished difference Result 350 states and 355 transitions. [2022-11-16 11:02:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-16 11:02:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 3.1443298969072164) internal successors, (305), 93 states have internal predecessors, (305), 44 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (46), 46 states have call predecessors, (46), 44 states have call successors, (46) Word has length 263 [2022-11-16 11:02:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:39,854 INFO L225 Difference]: With dead ends: 350 [2022-11-16 11:02:39,854 INFO L226 Difference]: Without dead ends: 348 [2022-11-16 11:02:39,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 517 SyntacticMatches, 8 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4657 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=597, Invalid=14903, Unknown=0, NotChecked=0, Total=15500 [2022-11-16 11:02:39,855 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 409 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 6705 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 6964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 6705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:39,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 3284 Invalid, 6964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 6705 Invalid, 0 Unknown, 173 Unchecked, 3.2s Time] [2022-11-16 11:02:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-16 11:02:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 265. [2022-11-16 11:02:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 219 states have (on average 1.0136986301369864) internal successors, (222), 219 states have internal predecessors, (222), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 11:02:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 270 transitions. [2022-11-16 11:02:39,993 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 270 transitions. Word has length 263 [2022-11-16 11:02:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:39,993 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 270 transitions. [2022-11-16 11:02:39,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 3.1443298969072164) internal successors, (305), 93 states have internal predecessors, (305), 44 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (46), 46 states have call predecessors, (46), 44 states have call successors, (46) [2022-11-16 11:02:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 270 transitions. [2022-11-16 11:02:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-16 11:02:39,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:39,995 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:40,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-16 11:02:40,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-11-16 11:02:40,205 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash 854186374, now seen corresponding path program 58 times [2022-11-16 11:02:40,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:40,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281419893] [2022-11-16 11:02:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:02:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:02:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:02:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:02:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:02:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:02:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:02:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:02:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:02:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:02:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:02:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:02:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:02:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:02:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:02:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:02:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:02:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:02:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:02:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:02:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:02:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:02:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:02:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 66 proven. 1721 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-16 11:02:42,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:42,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281419893] [2022-11-16 11:02:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281419893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:02:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974515044] [2022-11-16 11:02:42,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:02:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:02:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:02:42,611 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:02:42,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-16 11:02:43,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:02:43,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:02:43,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 11:02:43,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:02:45,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:02:47,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:02:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 66 proven. 1721 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-16 11:02:47,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:02:48,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 11:02:48,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 11:02:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 66 proven. 1721 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-16 11:02:48,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974515044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:02:48,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:02:48,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 52, 51] total 102 [2022-11-16 11:02:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976838235] [2022-11-16 11:02:48,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:02:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-11-16 11:02:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-11-16 11:02:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=9885, Unknown=0, NotChecked=0, Total=10302 [2022-11-16 11:02:48,792 INFO L87 Difference]: Start difference. First operand 265 states and 270 transitions. Second operand has 102 states, 101 states have (on average 3.1485148514851486) internal successors, (318), 98 states have internal predecessors, (318), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 44 states have call successors, (45) [2022-11-16 11:02:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:56,921 INFO L93 Difference]: Finished difference Result 370 states and 376 transitions. [2022-11-16 11:02:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-16 11:02:56,921 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 3.1485148514851486) internal successors, (318), 98 states have internal predecessors, (318), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 44 states have call successors, (45) Word has length 267 [2022-11-16 11:02:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:56,923 INFO L225 Difference]: With dead ends: 370 [2022-11-16 11:02:56,923 INFO L226 Difference]: Without dead ends: 368 [2022-11-16 11:02:56,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 525 SyntacticMatches, 4 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8670 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1364, Invalid=29788, Unknown=0, NotChecked=0, Total=31152 [2022-11-16 11:02:56,925 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 899 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 8993 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4198 SdHoareTripleChecker+Invalid, 9177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 8993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:56,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 4198 Invalid, 9177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 8993 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 11:02:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-16 11:02:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 269. [2022-11-16 11:02:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 223 states have (on average 1.0134529147982063) internal successors, (226), 223 states have internal predecessors, (226), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 11:02:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 274 transitions. [2022-11-16 11:02:57,059 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 274 transitions. Word has length 267 [2022-11-16 11:02:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:57,059 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 274 transitions. [2022-11-16 11:02:57,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 3.1485148514851486) internal successors, (318), 98 states have internal predecessors, (318), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 44 states have call successors, (45) [2022-11-16 11:02:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 274 transitions. [2022-11-16 11:02:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-16 11:02:57,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:57,061 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:57,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-11-16 11:02:57,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-11-16 11:02:57,269 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1994406099, now seen corresponding path program 59 times [2022-11-16 11:02:57,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:57,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419598014] [2022-11-16 11:02:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:02:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:02:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:02:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:02:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:02:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:02:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:02:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:02:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:02:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:02:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:02:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:02:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:02:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:02:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:02:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:02:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:02:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:02:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:02:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:02:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:02:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:02:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:02:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:02:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 63 proven. 1737 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-11-16 11:02:59,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:59,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419598014] [2022-11-16 11:02:59,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419598014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:02:59,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097317528] [2022-11-16 11:02:59,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:02:59,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:02:59,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:03:00,003 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:03:00,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-16 11:03:00,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-11-16 11:03:00,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:03:00,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-16 11:03:00,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:02,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:03:03,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:03:03,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:03:03,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:03:03,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:03:05,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:03:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 260 proven. 1755 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-16 11:03:05,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:03:06,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:03:06,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:03:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 63 proven. 1736 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-11-16 11:03:06,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097317528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:03:06,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:03:06,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 52, 51] total 102 [2022-11-16 11:03:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451810475] [2022-11-16 11:03:06,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:03:06,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-11-16 11:03:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-11-16 11:03:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=9839, Unknown=0, NotChecked=0, Total=10302 [2022-11-16 11:03:06,783 INFO L87 Difference]: Start difference. First operand 269 states and 274 transitions. Second operand has 102 states, 101 states have (on average 3.1584158415841586) internal successors, (319), 98 states have internal predecessors, (319), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-16 11:03:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:12,172 INFO L93 Difference]: Finished difference Result 361 states and 365 transitions. [2022-11-16 11:03:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-16 11:03:12,173 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 3.1584158415841586) internal successors, (319), 98 states have internal predecessors, (319), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) Word has length 271 [2022-11-16 11:03:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:12,175 INFO L225 Difference]: With dead ends: 361 [2022-11-16 11:03:12,175 INFO L226 Difference]: Without dead ends: 359 [2022-11-16 11:03:12,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 529 SyntacticMatches, 11 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5377 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=761, Invalid=16269, Unknown=0, NotChecked=0, Total=17030 [2022-11-16 11:03:12,177 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 577 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 8187 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 8363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 8187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:12,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 4146 Invalid, 8363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 8187 Invalid, 0 Unknown, 88 Unchecked, 4.1s Time] [2022-11-16 11:03:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-16 11:03:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 273. [2022-11-16 11:03:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 226 states have (on average 1.0132743362831858) internal successors, (229), 226 states have internal predecessors, (229), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 11:03:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 277 transitions. [2022-11-16 11:03:12,306 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 277 transitions. Word has length 271 [2022-11-16 11:03:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:12,306 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 277 transitions. [2022-11-16 11:03:12,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 3.1584158415841586) internal successors, (319), 98 states have internal predecessors, (319), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-16 11:03:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 277 transitions. [2022-11-16 11:03:12,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-16 11:03:12,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:12,309 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:12,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-16 11:03:12,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:03:12,517 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:03:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1734876292, now seen corresponding path program 60 times [2022-11-16 11:03:12,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:12,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362308434] [2022-11-16 11:03:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:12,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:03:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:03:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:03:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:03:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:03:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:03:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:03:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:03:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:03:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:03:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:03:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:03:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:03:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:03:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:03:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:03:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:03:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:03:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:03:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:03:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:03:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:03:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:03:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2755 backedges. 801 proven. 942 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-11-16 11:03:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:13,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362308434] [2022-11-16 11:03:13,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362308434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:03:13,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032150209] [2022-11-16 11:03:13,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:03:13,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:03:13,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:03:13,854 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:03:13,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-16 11:03:15,541 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2022-11-16 11:03:15,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:03:15,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:03:15,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2755 backedges. 882 proven. 861 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-11-16 11:03:16,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:03:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2755 backedges. 882 proven. 861 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-11-16 11:03:17,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032150209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:03:17,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:03:17,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2022-11-16 11:03:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033130434] [2022-11-16 11:03:17,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:03:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-16 11:03:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-16 11:03:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3815, Unknown=0, NotChecked=0, Total=4970 [2022-11-16 11:03:17,882 INFO L87 Difference]: Start difference. First operand 273 states and 277 transitions. Second operand has 71 states, 71 states have (on average 3.5774647887323945) internal successors, (254), 71 states have internal predecessors, (254), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2022-11-16 11:03:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:19,151 INFO L93 Difference]: Finished difference Result 377 states and 382 transitions. [2022-11-16 11:03:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:03:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.5774647887323945) internal successors, (254), 71 states have internal predecessors, (254), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 271 [2022-11-16 11:03:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:19,153 INFO L225 Difference]: With dead ends: 377 [2022-11-16 11:03:19,154 INFO L226 Difference]: Without dead ends: 285 [2022-11-16 11:03:19,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 520 SyntacticMatches, 44 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1980, Invalid=6576, Unknown=0, NotChecked=0, Total=8556 [2022-11-16 11:03:19,155 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 565 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:19,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 484 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:03:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-16 11:03:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 268. [2022-11-16 11:03:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 221 states have (on average 1.009049773755656) internal successors, (223), 221 states have internal predecessors, (223), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 11:03:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2022-11-16 11:03:19,359 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 271 [2022-11-16 11:03:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:19,360 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2022-11-16 11:03:19,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.5774647887323945) internal successors, (254), 71 states have internal predecessors, (254), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2022-11-16 11:03:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2022-11-16 11:03:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-16 11:03:19,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:19,362 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:19,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-16 11:03:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-11-16 11:03:19,571 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:03:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 813945929, now seen corresponding path program 61 times [2022-11-16 11:03:19,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:19,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585418969] [2022-11-16 11:03:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:03:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:03:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:03:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:03:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:03:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:03:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:03:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:03:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:03:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:03:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:03:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:03:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:03:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:03:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:03:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:03:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:03:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:03:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:03:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:03:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:03:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:03:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:03:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:03:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 66 proven. 1812 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-11-16 11:03:22,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:22,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585418969] [2022-11-16 11:03:22,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585418969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:03:22,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770828245] [2022-11-16 11:03:22,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:03:22,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:03:22,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:03:22,195 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:03:22,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-16 11:03:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-16 11:03:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:24,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:03:25,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:03:25,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:03:27,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:03:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 149 proven. 1869 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-11-16 11:03:27,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:03:27,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:03:27,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:03:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 66 proven. 1812 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-11-16 11:03:28,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770828245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:03:28,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:03:28,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 53, 52] total 104 [2022-11-16 11:03:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811070921] [2022-11-16 11:03:28,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:03:28,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-11-16 11:03:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-11-16 11:03:28,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=10246, Unknown=0, NotChecked=0, Total=10712 [2022-11-16 11:03:28,610 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 104 states, 103 states have (on average 3.1553398058252426) internal successors, (325), 100 states have internal predecessors, (325), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-16 11:03:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:33,753 INFO L93 Difference]: Finished difference Result 278 states and 282 transitions. [2022-11-16 11:03:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-16 11:03:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 3.1553398058252426) internal successors, (325), 100 states have internal predecessors, (325), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) Word has length 275 [2022-11-16 11:03:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:33,755 INFO L225 Difference]: With dead ends: 278 [2022-11-16 11:03:33,755 INFO L226 Difference]: Without dead ends: 276 [2022-11-16 11:03:33,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 539 SyntacticMatches, 7 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5213 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=758, Invalid=16798, Unknown=0, NotChecked=0, Total=17556 [2022-11-16 11:03:33,756 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 296 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 7799 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 8008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 7799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:33,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 3505 Invalid, 8008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 7799 Invalid, 0 Unknown, 135 Unchecked, 4.0s Time] [2022-11-16 11:03:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-16 11:03:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2022-11-16 11:03:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 225 states have (on average 1.008888888888889) internal successors, (227), 225 states have internal predecessors, (227), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 11:03:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 275 transitions. [2022-11-16 11:03:33,876 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 275 transitions. Word has length 275 [2022-11-16 11:03:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:33,876 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 275 transitions. [2022-11-16 11:03:33,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 3.1553398058252426) internal successors, (325), 100 states have internal predecessors, (325), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-16 11:03:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 275 transitions. [2022-11-16 11:03:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-16 11:03:33,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:33,878 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:33,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-11-16 11:03:34,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:03:34,085 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:03:34,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -278870849, now seen corresponding path program 62 times [2022-11-16 11:03:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:34,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680028903] [2022-11-16 11:03:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:03:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:03:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:03:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:03:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:03:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:03:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:03:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:03:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:03:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:03:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:03:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:03:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:03:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:03:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:03:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:03:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:03:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:03:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:03:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:03:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:03:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:03:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:03:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:03:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 69 proven. 1891 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-11-16 11:03:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:36,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680028903] [2022-11-16 11:03:36,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680028903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:03:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703404590] [2022-11-16 11:03:36,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:03:36,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:03:36,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:03:36,837 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:03:36,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-16 11:03:37,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:03:37,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:03:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 11:03:37,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:39,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:03:43,224 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 11:03:43,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 11:03:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 924 proven. 1093 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2022-11-16 11:03:43,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:03:50,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 11:03:50,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 11:03:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 909 proven. 1051 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-11-16 11:03:54,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703404590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:03:54,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:03:54,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 55, 54] total 154 [2022-11-16 11:03:54,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980875622] [2022-11-16 11:03:54,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:03:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2022-11-16 11:03:54,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2022-11-16 11:03:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2469, Invalid=21093, Unknown=0, NotChecked=0, Total=23562 [2022-11-16 11:03:54,758 INFO L87 Difference]: Start difference. First operand 272 states and 275 transitions. Second operand has 154 states, 154 states have (on average 3.0974025974025974) internal successors, (477), 148 states have internal predecessors, (477), 68 states have call successors, (69), 1 states have call predecessors, (69), 2 states have return successors, (71), 71 states have call predecessors, (71), 68 states have call successors, (71) [2022-11-16 11:04:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:04:09,203 INFO L93 Difference]: Finished difference Result 368 states and 373 transitions. [2022-11-16 11:04:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-11-16 11:04:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 3.0974025974025974) internal successors, (477), 148 states have internal predecessors, (477), 68 states have call successors, (69), 1 states have call predecessors, (69), 2 states have return successors, (71), 71 states have call predecessors, (71), 68 states have call successors, (71) Word has length 279 [2022-11-16 11:04:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:04:09,205 INFO L225 Difference]: With dead ends: 368 [2022-11-16 11:04:09,206 INFO L226 Difference]: Without dead ends: 276 [2022-11-16 11:04:09,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 546 SyntacticMatches, 1 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20246 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=6404, Invalid=64618, Unknown=0, NotChecked=0, Total=71022 [2022-11-16 11:04:09,209 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 301 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 3849 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 663 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:04:09,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 3364 Invalid, 4630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3849 Invalid, 0 Unknown, 663 Unchecked, 2.4s Time] [2022-11-16 11:04:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-16 11:04:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-16 11:04:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 228 states have internal predecessors, (230), 25 states have call successors, (25), 22 states have call predecessors, (25), 22 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-16 11:04:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2022-11-16 11:04:09,380 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 279 [2022-11-16 11:04:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:04:09,381 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2022-11-16 11:04:09,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 3.0974025974025974) internal successors, (477), 148 states have internal predecessors, (477), 68 states have call successors, (69), 1 states have call predecessors, (69), 2 states have return successors, (71), 71 states have call predecessors, (71), 68 states have call successors, (71) [2022-11-16 11:04:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2022-11-16 11:04:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-16 11:04:09,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:09,382 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:09,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:09,583 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -241061118, now seen corresponding path program 63 times [2022-11-16 11:04:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559906691] [2022-11-16 11:04:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:04:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:04:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:04:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:04:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:04:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:04:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:04:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:04:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:04:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:04:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:04:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:04:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:04:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:04:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:04:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:04:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:04:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:04:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:04:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:04:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:04:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:04:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:04:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:04:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 69 proven. 1986 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-16 11:04:12,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:12,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559906691] [2022-11-16 11:04:12,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559906691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:12,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012910721] [2022-11-16 11:04:12,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:04:12,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:12,619 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:12,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-16 11:04:19,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2022-11-16 11:04:19,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:04:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 11:04:19,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:21,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:04:25,811 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 11:04:25,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 11:04:27,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 11:04:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 159 proven. 1986 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-11-16 11:04:27,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:28,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:04:28,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:04:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 69 proven. 1986 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-16 11:04:28,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012910721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:28,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:28,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 104 [2022-11-16 11:04:28,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567969188] [2022-11-16 11:04:28,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:28,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-11-16 11:04:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-11-16 11:04:28,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=10311, Unknown=2, NotChecked=0, Total=10712 [2022-11-16 11:04:28,981 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 104 states, 104 states have (on average 3.1923076923076925) internal successors, (332), 100 states have internal predecessors, (332), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2022-11-16 11:04:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:04:35,244 INFO L93 Difference]: Finished difference Result 382 states and 387 transitions. [2022-11-16 11:04:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-16 11:04:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.1923076923076925) internal successors, (332), 100 states have internal predecessors, (332), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) Word has length 287 [2022-11-16 11:04:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:04:35,246 INFO L225 Difference]: With dead ends: 382 [2022-11-16 11:04:35,246 INFO L226 Difference]: Without dead ends: 380 [2022-11-16 11:04:35,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 565 SyntacticMatches, 9 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5297 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=634, Invalid=16920, Unknown=2, NotChecked=0, Total=17556 [2022-11-16 11:04:35,247 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 270 mSDsluCounter, 5237 mSDsCounter, 0 mSdLazyCounter, 9529 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 9786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 9529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:04:35,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 5319 Invalid, 9786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 9529 Invalid, 0 Unknown, 165 Unchecked, 4.9s Time] [2022-11-16 11:04:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-16 11:04:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 289. [2022-11-16 11:04:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:04:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 294 transitions. [2022-11-16 11:04:35,423 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 294 transitions. Word has length 287 [2022-11-16 11:04:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:04:35,423 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 294 transitions. [2022-11-16 11:04:35,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.1923076923076925) internal successors, (332), 100 states have internal predecessors, (332), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2022-11-16 11:04:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 294 transitions. [2022-11-16 11:04:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-16 11:04:35,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:35,424 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:35,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:35,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:35,627 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 479108856, now seen corresponding path program 64 times [2022-11-16 11:04:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:35,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148913333] [2022-11-16 11:04:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:04:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:04:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:04:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:04:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:04:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:04:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:04:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:04:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:04:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:04:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:04:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:04:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:04:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:04:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:04:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:04:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:04:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:04:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:04:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:04:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:04:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:04:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:04:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:04:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3203 backedges. 72 proven. 2069 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-16 11:04:38,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:38,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148913333] [2022-11-16 11:04:38,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148913333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:38,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923065109] [2022-11-16 11:04:38,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:04:38,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:38,599 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:38,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-16 11:04:39,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:04:39,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:04:39,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-16 11:04:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:41,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:04:44,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:04:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3203 backedges. 72 proven. 2069 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-16 11:04:44,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:45,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 11:04:45,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 11:04:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3203 backedges. 72 proven. 2069 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-16 11:04:45,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923065109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:45,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:45,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 54] total 108 [2022-11-16 11:04:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068189136] [2022-11-16 11:04:45,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-11-16 11:04:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-11-16 11:04:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=11117, Unknown=0, NotChecked=0, Total=11556 [2022-11-16 11:04:45,711 INFO L87 Difference]: Start difference. First operand 289 states and 294 transitions. Second operand has 108 states, 107 states have (on average 3.2149532710280373) internal successors, (344), 104 states have internal predecessors, (344), 48 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) [2022-11-16 11:04:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:04:55,776 INFO L93 Difference]: Finished difference Result 402 states and 408 transitions. [2022-11-16 11:04:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-16 11:04:55,776 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 3.2149532710280373) internal successors, (344), 104 states have internal predecessors, (344), 48 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) Word has length 291 [2022-11-16 11:04:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:04:55,778 INFO L225 Difference]: With dead ends: 402 [2022-11-16 11:04:55,778 INFO L226 Difference]: Without dead ends: 400 [2022-11-16 11:04:55,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 575 SyntacticMatches, 4 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9162 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1378, Invalid=31928, Unknown=0, NotChecked=0, Total=33306 [2022-11-16 11:04:55,781 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 743 mSDsluCounter, 5670 mSDsCounter, 0 mSdLazyCounter, 11902 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 12038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 11902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:04:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 5756 Invalid, 12038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 11902 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 11:04:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-16 11:04:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 293. [2022-11-16 11:04:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 243 states have internal predecessors, (246), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:04:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 298 transitions. [2022-11-16 11:04:55,978 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 298 transitions. Word has length 291 [2022-11-16 11:04:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:04:55,978 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 298 transitions. [2022-11-16 11:04:55,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 3.2149532710280373) internal successors, (344), 104 states have internal predecessors, (344), 48 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) [2022-11-16 11:04:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 298 transitions. [2022-11-16 11:04:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-16 11:04:55,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:55,980 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:55,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:56,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-11-16 11:04:56,181 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:56,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:56,181 INFO L85 PathProgramCache]: Analyzing trace with hash 553496133, now seen corresponding path program 65 times [2022-11-16 11:04:56,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:56,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25520654] [2022-11-16 11:04:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:56,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:04:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:04:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:04:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:04:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:04:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:04:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:04:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:04:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:04:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:04:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:04:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:04:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:04:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:04:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:04:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:04:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:04:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:04:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:04:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:04:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:04:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:04:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:04:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:04:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:04:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3310 backedges. 69 proven. 2085 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-16 11:04:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25520654] [2022-11-16 11:04:59,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25520654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899988158] [2022-11-16 11:04:59,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:04:59,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:59,584 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:59,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-16 11:05:00,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-11-16 11:05:00,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:00,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-16 11:05:00,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:03,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:05:03,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:03,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:05:04,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:04,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:05:06,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:05:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3310 backedges. 273 proven. 2118 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2022-11-16 11:05:06,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:07,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899988158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:07,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:05:07,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 56] total 107 [2022-11-16 11:05:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314309798] [2022-11-16 11:05:07,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:07,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-16 11:05:07,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-16 11:05:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=11275, Unknown=0, NotChecked=0, Total=11772 [2022-11-16 11:05:07,008 INFO L87 Difference]: Start difference. First operand 293 states and 298 transitions. Second operand has 107 states, 106 states have (on average 3.169811320754717) internal successors, (336), 103 states have internal predecessors, (336), 50 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) [2022-11-16 11:05:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:16,114 INFO L93 Difference]: Finished difference Result 393 states and 397 transitions. [2022-11-16 11:05:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-16 11:05:16,115 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 3.169811320754717) internal successors, (336), 103 states have internal predecessors, (336), 50 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) Word has length 295 [2022-11-16 11:05:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:16,116 INFO L225 Difference]: With dead ends: 393 [2022-11-16 11:05:16,116 INFO L226 Difference]: Without dead ends: 391 [2022-11-16 11:05:16,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 382 SyntacticMatches, 7 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7463 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1262, Invalid=24820, Unknown=0, NotChecked=0, Total=26082 [2022-11-16 11:05:16,118 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 574 mSDsluCounter, 4700 mSDsCounter, 0 mSdLazyCounter, 10302 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 10574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 10302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:16,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 4784 Invalid, 10574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 10302 Invalid, 0 Unknown, 140 Unchecked, 5.3s Time] [2022-11-16 11:05:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-16 11:05:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 297. [2022-11-16 11:05:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 246 states have (on average 1.0121951219512195) internal successors, (249), 246 states have internal predecessors, (249), 26 states have call successors, (26), 24 states have call predecessors, (26), 24 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:05:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 301 transitions. [2022-11-16 11:05:16,297 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 301 transitions. Word has length 295 [2022-11-16 11:05:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:16,297 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 301 transitions. [2022-11-16 11:05:16,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 3.169811320754717) internal successors, (336), 103 states have internal predecessors, (336), 50 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) [2022-11-16 11:05:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 301 transitions. [2022-11-16 11:05:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-16 11:05:16,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:16,299 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:16,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-11-16 11:05:16,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-16 11:05:16,508 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -291987474, now seen corresponding path program 66 times [2022-11-16 11:05:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:16,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011087263] [2022-11-16 11:05:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:05:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:05:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:05:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:05:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:05:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:05:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:05:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:05:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:05:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:05:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:05:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:05:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:05:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:05:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:05:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:05:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:05:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:05:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:05:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:05:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:05:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:05:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:05:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:05:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 969 proven. 1124 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-11-16 11:05:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011087263] [2022-11-16 11:05:18,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011087263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768941488] [2022-11-16 11:05:18,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:05:18,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:18,225 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:18,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-16 11:05:22,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-11-16 11:05:22,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:22,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 11:05:22,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 1058 proven. 1035 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-11-16 11:05:23,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 1058 proven. 1035 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-11-16 11:05:24,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768941488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:24,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:24,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2022-11-16 11:05:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290931365] [2022-11-16 11:05:24,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:24,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-11-16 11:05:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-11-16 11:05:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=4497, Unknown=0, NotChecked=0, Total=5852 [2022-11-16 11:05:24,915 INFO L87 Difference]: Start difference. First operand 297 states and 301 transitions. Second operand has 77 states, 77 states have (on average 3.5844155844155843) internal successors, (276), 77 states have internal predecessors, (276), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-11-16 11:05:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:26,371 INFO L93 Difference]: Finished difference Result 409 states and 414 transitions. [2022-11-16 11:05:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 11:05:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.5844155844155843) internal successors, (276), 77 states have internal predecessors, (276), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) Word has length 295 [2022-11-16 11:05:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:26,373 INFO L225 Difference]: With dead ends: 409 [2022-11-16 11:05:26,373 INFO L226 Difference]: Without dead ends: 309 [2022-11-16 11:05:26,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 566 SyntacticMatches, 48 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4725 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2327, Invalid=7773, Unknown=0, NotChecked=0, Total=10100 [2022-11-16 11:05:26,375 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 665 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:26,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 565 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:05:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-16 11:05:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 292. [2022-11-16 11:05:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 241 states have (on average 1.008298755186722) internal successors, (243), 241 states have internal predecessors, (243), 26 states have call successors, (26), 24 states have call predecessors, (26), 24 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:05:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 295 transitions. [2022-11-16 11:05:26,596 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 295 transitions. Word has length 295 [2022-11-16 11:05:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:26,596 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 295 transitions. [2022-11-16 11:05:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.5844155844155843) internal successors, (276), 77 states have internal predecessors, (276), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-11-16 11:05:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 295 transitions. [2022-11-16 11:05:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-16 11:05:26,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:26,597 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:26,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:26,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:26,798 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -81444677, now seen corresponding path program 67 times [2022-11-16 11:05:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236366609] [2022-11-16 11:05:26,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:05:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:05:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:05:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:05:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:05:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:05:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:05:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:05:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:05:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:05:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:05:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:05:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:05:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:05:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:05:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:05:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:05:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:05:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:05:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:05:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:05:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:05:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:05:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:05:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:05:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 72 proven. 2168 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-16 11:05:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236366609] [2022-11-16 11:05:29,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236366609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598362933] [2022-11-16 11:05:29,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:05:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:29,987 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:30,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-16 11:05:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:30,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-16 11:05:30,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:33,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:05:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:33,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:05:36,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:05:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 196 proven. 2198 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-16 11:05:36,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:37,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:05:37,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:05:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 72 proven. 2168 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-16 11:05:37,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598362933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:37,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:37,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57, 56] total 112 [2022-11-16 11:05:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505193213] [2022-11-16 11:05:37,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:37,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-11-16 11:05:37,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-11-16 11:05:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=11928, Unknown=0, NotChecked=0, Total=12432 [2022-11-16 11:05:37,901 INFO L87 Difference]: Start difference. First operand 292 states and 295 transitions. Second operand has 112 states, 111 states have (on average 3.18018018018018) internal successors, (353), 108 states have internal predecessors, (353), 50 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) [2022-11-16 11:05:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:44,077 INFO L93 Difference]: Finished difference Result 302 states and 306 transitions. [2022-11-16 11:05:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-16 11:05:44,077 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 3.18018018018018) internal successors, (353), 108 states have internal predecessors, (353), 50 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) Word has length 299 [2022-11-16 11:05:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:44,079 INFO L225 Difference]: With dead ends: 302 [2022-11-16 11:05:44,079 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 11:05:44,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 587 SyntacticMatches, 7 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6038 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=816, Invalid=19490, Unknown=0, NotChecked=0, Total=20306 [2022-11-16 11:05:44,081 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 575 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 8995 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 9224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 8995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:44,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 3764 Invalid, 9224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 8995 Invalid, 0 Unknown, 100 Unchecked, 4.8s Time] [2022-11-16 11:05:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 11:05:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-11-16 11:05:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 245 states have internal predecessors, (247), 26 states have call successors, (26), 24 states have call predecessors, (26), 24 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:05:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 299 transitions. [2022-11-16 11:05:44,244 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 299 transitions. Word has length 299 [2022-11-16 11:05:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:44,244 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 299 transitions. [2022-11-16 11:05:44,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 3.18018018018018) internal successors, (353), 108 states have internal predecessors, (353), 50 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) [2022-11-16 11:05:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 299 transitions. [2022-11-16 11:05:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-16 11:05:44,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:44,246 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:44,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:44,446 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2041751601, now seen corresponding path program 68 times [2022-11-16 11:05:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416042871] [2022-11-16 11:05:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:05:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:05:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:05:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:05:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:05:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:05:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:05:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:05:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:05:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:05:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:05:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:05:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:05:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:05:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:05:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:05:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:05:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:05:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:05:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:05:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:05:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:05:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:05:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:05:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:05:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 75 proven. 2255 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-16 11:05:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416042871] [2022-11-16 11:05:47,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416042871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430671620] [2022-11-16 11:05:47,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:47,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:47,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:47,416 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:47,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-16 11:05:47,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:05:47,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:47,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-16 11:05:47,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:50,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:05:55,169 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 11:05:55,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 11:05:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 1104 proven. 1289 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2022-11-16 11:05:55,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:01,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 11:06:01,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-16 11:06:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 1087 proven. 1243 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-16 11:06:07,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430671620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:07,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:07,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 59, 58] total 166 [2022-11-16 11:06:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022695739] [2022-11-16 11:06:07,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2022-11-16 11:06:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2022-11-16 11:06:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=24540, Unknown=0, NotChecked=0, Total=27390 [2022-11-16 11:06:07,079 INFO L87 Difference]: Start difference. First operand 296 states and 299 transitions. Second operand has 166 states, 166 states have (on average 3.1265060240963853) internal successors, (519), 160 states have internal predecessors, (519), 74 states have call successors, (75), 1 states have call predecessors, (75), 2 states have return successors, (77), 77 states have call predecessors, (77), 74 states have call successors, (77) [2022-11-16 11:06:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:23,975 INFO L93 Difference]: Finished difference Result 400 states and 405 transitions. [2022-11-16 11:06:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-11-16 11:06:23,976 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 3.1265060240963853) internal successors, (519), 160 states have internal predecessors, (519), 74 states have call successors, (75), 1 states have call predecessors, (75), 2 states have return successors, (77), 77 states have call predecessors, (77), 74 states have call successors, (77) Word has length 303 [2022-11-16 11:06:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:23,977 INFO L225 Difference]: With dead ends: 400 [2022-11-16 11:06:23,977 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 11:06:23,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 595 SyntacticMatches, 1 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23565 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=7380, Invalid=75852, Unknown=0, NotChecked=0, Total=83232 [2022-11-16 11:06:23,981 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 207 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 4436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 445 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:23,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 3890 Invalid, 4436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3873 Invalid, 0 Unknown, 445 Unchecked, 2.5s Time] [2022-11-16 11:06:23,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 11:06:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-11-16 11:06:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 248 states have (on average 1.0080645161290323) internal successors, (250), 248 states have internal predecessors, (250), 27 states have call successors, (27), 24 states have call predecessors, (27), 24 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-16 11:06:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 304 transitions. [2022-11-16 11:06:24,215 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 304 transitions. Word has length 303 [2022-11-16 11:06:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:24,215 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 304 transitions. [2022-11-16 11:06:24,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 3.1265060240963853) internal successors, (519), 160 states have internal predecessors, (519), 74 states have call successors, (75), 1 states have call predecessors, (75), 2 states have return successors, (77), 77 states have call predecessors, (77), 74 states have call successors, (77) [2022-11-16 11:06:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 304 transitions. [2022-11-16 11:06:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-16 11:06:24,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:24,217 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:24,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:24,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:24,417 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1009630580, now seen corresponding path program 69 times [2022-11-16 11:06:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:24,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822315158] [2022-11-16 11:06:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:06:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:06:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:06:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:06:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:06:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:06:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:06:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:06:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:06:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:06:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:06:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:06:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:06:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:06:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:06:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:06:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:06:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:06:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:06:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:06:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:06:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:06:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:06:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:06:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:06:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3687 backedges. 75 proven. 2358 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-16 11:06:27,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822315158] [2022-11-16 11:06:27,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822315158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314717319] [2022-11-16 11:06:27,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:06:27,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:27,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:27,561 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:27,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-16 11:06:35,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-11-16 11:06:35,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:06:35,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-16 11:06:35,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:38,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:06:40,795 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 11:06:40,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 11:06:42,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 11:06:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3687 backedges. 173 proven. 2358 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-16 11:06:43,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:43,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:06:43,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:06:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3687 backedges. 75 proven. 2358 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-16 11:06:44,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314717319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:44,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:44,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 112 [2022-11-16 11:06:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666281221] [2022-11-16 11:06:44,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-11-16 11:06:44,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-11-16 11:06:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=12000, Unknown=1, NotChecked=0, Total=12432 [2022-11-16 11:06:44,429 INFO L87 Difference]: Start difference. First operand 300 states and 304 transitions. Second operand has 112 states, 112 states have (on average 3.2142857142857144) internal successors, (360), 108 states have internal predecessors, (360), 51 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (53), 53 states have call predecessors, (53), 51 states have call successors, (53) [2022-11-16 11:06:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:52,343 INFO L93 Difference]: Finished difference Result 414 states and 419 transitions. [2022-11-16 11:06:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-16 11:06:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 3.2142857142857144) internal successors, (360), 108 states have internal predecessors, (360), 51 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (53), 53 states have call predecessors, (53), 51 states have call successors, (53) Word has length 311 [2022-11-16 11:06:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:52,345 INFO L225 Difference]: With dead ends: 414 [2022-11-16 11:06:52,345 INFO L226 Difference]: Without dead ends: 412 [2022-11-16 11:06:52,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 613 SyntacticMatches, 9 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6128 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=682, Invalid=19623, Unknown=1, NotChecked=0, Total=20306 [2022-11-16 11:06:52,347 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 291 mSDsluCounter, 5255 mSDsCounter, 0 mSdLazyCounter, 11084 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 5343 SdHoareTripleChecker+Invalid, 11380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 11084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:52,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 5343 Invalid, 11380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 11084 Invalid, 0 Unknown, 197 Unchecked, 6.2s Time] [2022-11-16 11:06:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-16 11:06:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 313. [2022-11-16 11:06:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 259 states have (on average 1.0115830115830116) internal successors, (262), 259 states have internal predecessors, (262), 28 states have call successors, (28), 25 states have call predecessors, (28), 25 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 11:06:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 318 transitions. [2022-11-16 11:06:52,528 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 318 transitions. Word has length 311 [2022-11-16 11:06:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:52,528 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 318 transitions. [2022-11-16 11:06:52,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 3.2142857142857144) internal successors, (360), 108 states have internal predecessors, (360), 51 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (53), 53 states have call predecessors, (53), 51 states have call successors, (53) [2022-11-16 11:06:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 318 transitions. [2022-11-16 11:06:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-16 11:06:52,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:52,529 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:52,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:52,730 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:52,730 INFO L85 PathProgramCache]: Analyzing trace with hash -733208470, now seen corresponding path program 70 times [2022-11-16 11:06:52,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:52,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158427903] [2022-11-16 11:06:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:06:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:06:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:06:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:06:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:06:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:06:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:06:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:06:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:06:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:06:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:06:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:06:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:06:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:06:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:06:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:06:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:06:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:06:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:06:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:06:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:06:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:06:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:06:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:06:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:06:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 78 proven. 2449 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-16 11:06:56,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:56,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158427903] [2022-11-16 11:06:56,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158427903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899449058] [2022-11-16 11:06:56,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:06:56,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:56,235 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:56,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-16 11:06:57,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:06:57,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:06:57,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-16 11:06:57,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:00,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:07:03,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:07:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 78 proven. 2449 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-16 11:07:03,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:04,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 11:07:04,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-16 11:07:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 78 proven. 2449 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-16 11:07:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899449058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:04,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:07:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 60, 59] total 118 [2022-11-16 11:07:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461510621] [2022-11-16 11:07:04,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-11-16 11:07:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-11-16 11:07:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=13319, Unknown=0, NotChecked=0, Total=13806 [2022-11-16 11:07:04,941 INFO L87 Difference]: Start difference. First operand 313 states and 318 transitions. Second operand has 118 states, 117 states have (on average 3.1794871794871793) internal successors, (372), 114 states have internal predecessors, (372), 52 states have call successors, (53), 1 states have call predecessors, (53), 2 states have return successors, (53), 53 states have call predecessors, (53), 52 states have call successors, (53) [2022-11-16 11:07:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:17,370 INFO L93 Difference]: Finished difference Result 434 states and 440 transitions. [2022-11-16 11:07:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-16 11:07:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 3.1794871794871793) internal successors, (372), 114 states have internal predecessors, (372), 52 states have call successors, (53), 1 states have call predecessors, (53), 2 states have return successors, (53), 53 states have call predecessors, (53), 52 states have call successors, (53) Word has length 315 [2022-11-16 11:07:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:17,373 INFO L225 Difference]: With dead ends: 434 [2022-11-16 11:07:17,373 INFO L226 Difference]: Without dead ends: 432 [2022-11-16 11:07:17,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 621 SyntacticMatches, 4 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11740 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1584, Invalid=40236, Unknown=0, NotChecked=0, Total=41820 [2022-11-16 11:07:17,376 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1010 mSDsluCounter, 5479 mSDsCounter, 0 mSdLazyCounter, 12796 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 12983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 12796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:17,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 5570 Invalid, 12983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 12796 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 11:07:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-16 11:07:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2022-11-16 11:07:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 263 states have (on average 1.0114068441064639) internal successors, (266), 263 states have internal predecessors, (266), 28 states have call successors, (28), 25 states have call predecessors, (28), 25 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 11:07:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 322 transitions. [2022-11-16 11:07:17,632 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 322 transitions. Word has length 315 [2022-11-16 11:07:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:17,632 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 322 transitions. [2022-11-16 11:07:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 3.1794871794871793) internal successors, (372), 114 states have internal predecessors, (372), 52 states have call successors, (53), 1 states have call predecessors, (53), 2 states have return successors, (53), 53 states have call predecessors, (53), 52 states have call successors, (53) [2022-11-16 11:07:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 322 transitions. [2022-11-16 11:07:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-16 11:07:17,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:17,634 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:17,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:17,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-11-16 11:07:17,834 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:17,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1095966793, now seen corresponding path program 71 times [2022-11-16 11:07:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:17,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401711303] [2022-11-16 11:07:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:07:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:07:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:07:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:07:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:07:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:07:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:07:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:07:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:07:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:07:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:07:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:07:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:07:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:07:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:07:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:07:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:07:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:07:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:07:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:07:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:07:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:07:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:07:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-16 11:07:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3896 backedges. 75 proven. 2465 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-11-16 11:07:21,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:21,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401711303] [2022-11-16 11:07:21,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401711303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014033608] [2022-11-16 11:07:21,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:07:21,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:21,739 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:21,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-16 11:07:23,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-11-16 11:07:23,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:07:23,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-16 11:07:23,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:26,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:07:26,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:26,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:07:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:26,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:07:29,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:07:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3896 backedges. 289 proven. 2510 refuted. 0 times theorem prover too weak. 1097 trivial. 0 not checked. [2022-11-16 11:07:29,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:30,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:07:30,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:07:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3896 backedges. 75 proven. 2464 refuted. 0 times theorem prover too weak. 1357 trivial. 0 not checked. [2022-11-16 11:07:31,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014033608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:31,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:07:31,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 60, 59] total 118 [2022-11-16 11:07:31,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769338475] [2022-11-16 11:07:31,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:31,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-11-16 11:07:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-11-16 11:07:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=13267, Unknown=0, NotChecked=0, Total=13806 [2022-11-16 11:07:31,361 INFO L87 Difference]: Start difference. First operand 317 states and 322 transitions. Second operand has 118 states, 117 states have (on average 3.2051282051282053) internal successors, (375), 114 states have internal predecessors, (375), 54 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 55 states have call predecessors, (55), 54 states have call successors, (55) [2022-11-16 11:07:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:38,845 INFO L93 Difference]: Finished difference Result 425 states and 429 transitions. [2022-11-16 11:07:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-16 11:07:38,845 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 3.2051282051282053) internal successors, (375), 114 states have internal predecessors, (375), 54 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 55 states have call predecessors, (55), 54 states have call successors, (55) Word has length 319 [2022-11-16 11:07:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:38,847 INFO L225 Difference]: With dead ends: 425 [2022-11-16 11:07:38,847 INFO L226 Difference]: Without dead ends: 423 [2022-11-16 11:07:38,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 625 SyntacticMatches, 11 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7119 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=877, Invalid=21773, Unknown=0, NotChecked=0, Total=22650 [2022-11-16 11:07:38,850 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 479 mSDsluCounter, 4777 mSDsCounter, 0 mSdLazyCounter, 11157 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 11446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 11157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:38,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 4867 Invalid, 11446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 11157 Invalid, 0 Unknown, 155 Unchecked, 5.8s Time] [2022-11-16 11:07:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-16 11:07:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2022-11-16 11:07:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 266 states have (on average 1.0112781954887218) internal successors, (269), 266 states have internal predecessors, (269), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 11:07:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2022-11-16 11:07:39,120 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 319 [2022-11-16 11:07:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:39,120 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 325 transitions. [2022-11-16 11:07:39,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 3.2051282051282053) internal successors, (375), 114 states have internal predecessors, (375), 54 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 55 states have call predecessors, (55), 54 states have call successors, (55) [2022-11-16 11:07:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 325 transitions. [2022-11-16 11:07:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-16 11:07:39,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:39,121 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:39,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:39,322 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1611392928, now seen corresponding path program 72 times [2022-11-16 11:07:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:39,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244094182] [2022-11-16 11:07:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:07:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:07:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:07:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:07:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:07:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:07:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:07:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:07:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:07:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:07:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:07:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:07:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:07:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:07:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:07:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:07:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:07:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:07:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:07:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:07:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:07:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:07:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:07:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1153 proven. 1322 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-16 11:07:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244094182] [2022-11-16 11:07:41,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244094182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056504607] [2022-11-16 11:07:41,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:07:41,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:41,131 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:41,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-16 11:07:42,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-11-16 11:07:42,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:07:42,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 11:07:42,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1250 proven. 1225 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-16 11:07:44,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1250 proven. 1225 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-16 11:07:45,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056504607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:45,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:07:45,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2022-11-16 11:07:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910958604] [2022-11-16 11:07:45,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:45,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-16 11:07:45,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-16 11:07:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1571, Invalid=5235, Unknown=0, NotChecked=0, Total=6806 [2022-11-16 11:07:46,000 INFO L87 Difference]: Start difference. First operand 321 states and 325 transitions. Second operand has 83 states, 83 states have (on average 3.5903614457831323) internal successors, (298), 83 states have internal predecessors, (298), 27 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-11-16 11:07:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:47,498 INFO L93 Difference]: Finished difference Result 441 states and 446 transitions. [2022-11-16 11:07:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 11:07:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.5903614457831323) internal successors, (298), 83 states have internal predecessors, (298), 27 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) Word has length 319 [2022-11-16 11:07:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:47,501 INFO L225 Difference]: With dead ends: 441 [2022-11-16 11:07:47,501 INFO L226 Difference]: Without dead ends: 333 [2022-11-16 11:07:47,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 612 SyntacticMatches, 52 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5510 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2702, Invalid=9070, Unknown=0, NotChecked=0, Total=11772 [2022-11-16 11:07:47,502 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 635 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:47,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 619 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:07:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-16 11:07:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 316. [2022-11-16 11:07:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 261 states have internal predecessors, (263), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 11:07:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 319 transitions. [2022-11-16 11:07:47,694 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 319 transitions. Word has length 319 [2022-11-16 11:07:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:47,695 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 319 transitions. [2022-11-16 11:07:47,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.5903614457831323) internal successors, (298), 83 states have internal predecessors, (298), 27 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-11-16 11:07:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 319 transitions. [2022-11-16 11:07:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-16 11:07:47,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:47,696 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:47,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:47,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:47,897 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:47,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:47,897 INFO L85 PathProgramCache]: Analyzing trace with hash -501585619, now seen corresponding path program 73 times [2022-11-16 11:07:47,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:47,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280969224] [2022-11-16 11:07:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:07:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:07:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:07:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:07:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:07:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:07:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:07:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:07:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:07:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:07:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:07:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:07:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:07:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:07:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:07:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:07:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:07:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:07:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:07:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:07:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:07:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:07:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:07:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:07:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-16 11:07:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 78 proven. 2556 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-11-16 11:07:51,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:51,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280969224] [2022-11-16 11:07:51,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280969224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:51,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349930073] [2022-11-16 11:07:51,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:07:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:51,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:51,581 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:51,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-16 11:07:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-16 11:07:52,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:55,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:07:55,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:55,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:07:58,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:07:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 213 proven. 2589 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2022-11-16 11:07:58,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:59,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-16 11:07:59,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-16 11:08:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 78 proven. 2556 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-11-16 11:08:00,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349930073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:00,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:08:00,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 60] total 122 [2022-11-16 11:08:00,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040477517] [2022-11-16 11:08:00,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:00,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-11-16 11:08:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-11-16 11:08:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=14211, Unknown=0, NotChecked=0, Total=14762 [2022-11-16 11:08:00,296 INFO L87 Difference]: Start difference. First operand 316 states and 319 transitions. Second operand has 122 states, 120 states have (on average 3.183333333333333) internal successors, (382), 117 states have internal predecessors, (382), 55 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (56), 56 states have call predecessors, (56), 55 states have call successors, (56) [2022-11-16 11:08:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:07,677 INFO L93 Difference]: Finished difference Result 435 states and 440 transitions. [2022-11-16 11:08:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-16 11:08:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 120 states have (on average 3.183333333333333) internal successors, (382), 117 states have internal predecessors, (382), 55 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (56), 56 states have call predecessors, (56), 55 states have call successors, (56) Word has length 323 [2022-11-16 11:08:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:07,680 INFO L225 Difference]: With dead ends: 435 [2022-11-16 11:08:07,680 INFO L226 Difference]: Without dead ends: 433 [2022-11-16 11:08:07,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 635 SyntacticMatches, 6 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7085 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=885, Invalid=22985, Unknown=0, NotChecked=0, Total=23870 [2022-11-16 11:08:07,682 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 505 mSDsluCounter, 5929 mSDsCounter, 0 mSdLazyCounter, 10366 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 6020 SdHoareTripleChecker+Invalid, 10535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 10366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:07,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 6020 Invalid, 10535 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 10366 Invalid, 0 Unknown, 112 Unchecked, 5.6s Time] [2022-11-16 11:08:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-16 11:08:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 329. [2022-11-16 11:08:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 272 states have (on average 1.0110294117647058) internal successors, (275), 272 states have internal predecessors, (275), 29 states have call successors, (29), 27 states have call predecessors, (29), 27 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 11:08:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 333 transitions. [2022-11-16 11:08:07,913 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 333 transitions. Word has length 323 [2022-11-16 11:08:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:07,913 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 333 transitions. [2022-11-16 11:08:07,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 120 states have (on average 3.183333333333333) internal successors, (382), 117 states have internal predecessors, (382), 55 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (56), 56 states have call predecessors, (56), 55 states have call successors, (56) [2022-11-16 11:08:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 333 transitions. [2022-11-16 11:08:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-16 11:08:07,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:07,915 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:07,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:08,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-11-16 11:08:08,115 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash 404375459, now seen corresponding path program 74 times [2022-11-16 11:08:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800717244] [2022-11-16 11:08:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:08,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:08:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:08:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:08:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:08:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:08:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:08:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:08:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:08:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:08:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:08:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:08:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:08:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:08:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:08:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:08:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:08:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:08:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 11:08:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:08:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-16 11:08:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 11:08:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:08:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:08:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:08:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:08:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:08:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:08:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-16 11:08:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4088 backedges. 81 proven. 2651 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-11-16 11:08:11,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:11,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800717244] [2022-11-16 11:08:11,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800717244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:11,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384618178] [2022-11-16 11:08:11,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:08:11,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:11,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:11,801 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:11,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c188dc22-5321-4824-8494-a1631d663d37/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-16 11:08:12,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:08:12,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:12,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-16 11:08:12,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:16,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:08:20,928 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 11:08:20,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 11:08:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4088 backedges. 1300 proven. 1501 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-11-16 11:08:21,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:26,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 11:08:26,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28