./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3lif.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro --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 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a --- 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-8393723 [2022-11-18 21:08:46,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:08:46,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:08:46,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:08:46,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:08:46,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:08:46,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:08:46,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:08:46,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:08:46,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:08:46,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:08:46,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:08:46,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:08:46,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:08:46,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:08:46,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:08:46,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:08:46,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:08:46,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:08:46,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:08:46,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:08:46,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:08:46,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:08:46,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:08:46,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:08:46,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:08:46,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:08:46,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:08:46,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:08:46,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:08:46,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:08:46,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:08:46,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:08:46,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:08:46,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:08:46,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:08:46,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:08:46,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:08:46,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:08:46,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:08:46,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:08:46,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:08:46,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:08:46,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:08:46,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:08:46,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:08:46,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:08:46,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:08:46,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:08:46,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:08:46,358 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:08:46,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:08:46,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:08:46,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:08:46,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:08:46,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:08:46,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:08:46,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:08:46,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:08:46,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:08:46,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:08:46,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:08:46,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:08:46,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:08:46,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:08:46,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:08:46,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:08:46,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:08:46,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:08:46,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:08:46,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:08:46,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:08:46,365 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:08:46,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:08:46,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:08:46,365 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_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a [2022-11-18 21:08:46,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:08:46,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:08:46,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:08:46,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:08:46,697 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:08:46,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/s3lif.c [2022-11-18 21:08:46,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/0f233326c/f2cf4d0c91c94b97b8a7ba0753b9badc/FLAGffbb847e2 [2022-11-18 21:08:47,295 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:08:47,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/sv-benchmarks/c/array-fpi/s3lif.c [2022-11-18 21:08:47,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/0f233326c/f2cf4d0c91c94b97b8a7ba0753b9badc/FLAGffbb847e2 [2022-11-18 21:08:47,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/0f233326c/f2cf4d0c91c94b97b8a7ba0753b9badc [2022-11-18 21:08:47,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:08:47,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:08:47,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:08:47,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:08:47,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:08:47,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c536255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47, skipping insertion in model container [2022-11-18 21:08:47,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:08:47,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:08:47,865 WARN L234 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_2f8126d5-cc27-492d-8894-ba3600cd47e4/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2022-11-18 21:08:47,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:08:47,897 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:08:47,910 WARN L234 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_2f8126d5-cc27-492d-8894-ba3600cd47e4/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2022-11-18 21:08:47,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:08:47,931 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:08:47,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47 WrapperNode [2022-11-18 21:08:47,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:08:47,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:08:47,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:08:47,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:08:47,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,967 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2022-11-18 21:08:47,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:08:47,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:08:47,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:08:47,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:08:47,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,991 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:08:47,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:08:47,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:08:47,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:08:47,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:48,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:08:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:48,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:08:48,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:08:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:08:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:08:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:08:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:08:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:08:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:08:48,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:08:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:08:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:08:48,165 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:08:48,167 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:08:48,405 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:08:48,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:08:48,428 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:08:48,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:48 BoogieIcfgContainer [2022-11-18 21:08:48,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:08:48,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:08:48,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:08:48,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:08:48,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:08:47" (1/3) ... [2022-11-18 21:08:48,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c51b61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:48, skipping insertion in model container [2022-11-18 21:08:48,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (2/3) ... [2022-11-18 21:08:48,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c51b61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:48, skipping insertion in model container [2022-11-18 21:08:48,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:48" (3/3) ... [2022-11-18 21:08:48,440 INFO L112 eAbstractionObserver]: Analyzing ICFG s3lif.c [2022-11-18 21:08:48,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:08:48,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:08:48,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:08:48,593 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;@56d618c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:08:48,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:08:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 21:08:48,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:48,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:48,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2022-11-18 21:08:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:48,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488561567] [2022-11-18 21:08:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:48,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488561567] [2022-11-18 21:08:48,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488561567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:48,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:48,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:08:48,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093628022] [2022-11-18 21:08:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:08:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:08:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:08:48,881 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:48,907 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-11-18 21:08:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:08:48,910 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 21:08:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:48,917 INFO L225 Difference]: With dead ends: 40 [2022-11-18 21:08:48,917 INFO L226 Difference]: Without dead ends: 18 [2022-11-18 21:08:48,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:08:48,924 INFO L413 NwaCegarLoop]: 26 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, 26 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 [2022-11-18 21:08:48,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:08:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-18 21:08:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-18 21:08:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-18 21:08:48,959 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2022-11-18 21:08:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:48,960 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-18 21:08:48,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-18 21:08:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 21:08:48,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:48,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:48,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:08:48,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2022-11-18 21:08:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:48,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586292461] [2022-11-18 21:08:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:49,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:49,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586292461] [2022-11-18 21:08:49,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586292461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:49,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:49,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:08:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154113421] [2022-11-18 21:08:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:49,174 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:49,240 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-18 21:08:49,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:08:49,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 21:08:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:49,242 INFO L225 Difference]: With dead ends: 36 [2022-11-18 21:08:49,242 INFO L226 Difference]: Without dead ends: 25 [2022-11-18 21:08:49,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:49,244 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:49,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:08:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-18 21:08:49,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-11-18 21:08:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-18 21:08:49,250 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2022-11-18 21:08:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:49,251 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-18 21:08:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-18 21:08:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:08:49,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:49,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:49,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:08:49,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2022-11-18 21:08:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241331856] [2022-11-18 21:08:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:50,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241331856] [2022-11-18 21:08:50,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241331856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:50,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186577464] [2022-11-18 21:08:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:50,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:50,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:50,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:08:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:50,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 21:08:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:50,694 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 10 treesize of output 8 [2022-11-18 21:08:50,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:08:50,789 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 14 treesize of output 16 [2022-11-18 21:08:50,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-18 21:08:51,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-18 21:08:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:51,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:51,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:51,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 28 [2022-11-18 21:08:51,638 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:51,638 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-18 21:08:51,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:08:51,647 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 12 [2022-11-18 21:08:51,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:51,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186577464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:51,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:51,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2022-11-18 21:08:51,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588652640] [2022-11-18 21:08:51,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:51,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 21:08:51,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 21:08:51,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:08:51,673 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:52,044 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-18 21:08:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:08:52,045 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 21:08:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:52,047 INFO L225 Difference]: With dead ends: 46 [2022-11-18 21:08:52,047 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 21:08:52,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 21:08:52,049 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:52,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 54 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-18 21:08:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 21:08:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-11-18 21:08:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-18 21:08:52,059 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2022-11-18 21:08:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:52,059 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-18 21:08:52,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-18 21:08:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:08:52,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:52,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:52,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 21:08:52,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:52,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:52,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:52,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2022-11-18 21:08:52,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:52,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507882049] [2022-11-18 21:08:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:52,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507882049] [2022-11-18 21:08:52,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507882049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:52,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746407583] [2022-11-18 21:08:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:52,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:52,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:52,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:52,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:08:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:52,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 21:08:52,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:52,571 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 18 treesize of output 14 [2022-11-18 21:08:52,600 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 [2022-11-18 21:08:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:52,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:52,634 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 14 treesize of output 12 [2022-11-18 21:08:52,636 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 18 treesize of output 16 [2022-11-18 21:08:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:52,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746407583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:52,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:52,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-18 21:08:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526641706] [2022-11-18 21:08:52,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:52,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:08:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:08:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:08:52,649 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:52,758 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-18 21:08:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:08:52,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 21:08:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:52,759 INFO L225 Difference]: With dead ends: 49 [2022-11-18 21:08:52,760 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 21:08:52,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:08:52,761 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:52,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:08:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 21:08:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-11-18 21:08:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-11-18 21:08:52,768 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2022-11-18 21:08:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:52,768 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-11-18 21:08:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-11-18 21:08:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 21:08:52,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:52,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:52,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:52,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:52,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash -949569453, now seen corresponding path program 2 times [2022-11-18 21:08:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:52,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287799946] [2022-11-18 21:08:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:53,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287799946] [2022-11-18 21:08:53,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287799946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:53,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575480421] [2022-11-18 21:08:53,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:08:53,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:53,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:53,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:08:53,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:08:53,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:53,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:08:53,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:53,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575480421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:53,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:53,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 21:08:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567597132] [2022-11-18 21:08:53,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:53,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:08:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:08:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:08:53,265 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:53,410 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2022-11-18 21:08:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:08:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 21:08:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:53,412 INFO L225 Difference]: With dead ends: 70 [2022-11-18 21:08:53,412 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 21:08:53,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:08:53,414 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:53,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 28 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:08:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 21:08:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2022-11-18 21:08:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-18 21:08:53,434 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2022-11-18 21:08:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:53,435 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-18 21:08:53,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-18 21:08:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 21:08:53,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:53,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:53,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:53,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:53,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2105967953, now seen corresponding path program 3 times [2022-11-18 21:08:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979830211] [2022-11-18 21:08:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979830211] [2022-11-18 21:08:53,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979830211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:53,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506316162] [2022-11-18 21:08:53,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:08:53,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:53,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:53,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:08:53,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 21:08:53,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:53,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:08:53,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:53,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:53,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506316162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:53,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:53,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 21:08:53,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888149573] [2022-11-18 21:08:53,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:53,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:08:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:08:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:08:53,957 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:54,082 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-18 21:08:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:08:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 21:08:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:54,084 INFO L225 Difference]: With dead ends: 39 [2022-11-18 21:08:54,084 INFO L226 Difference]: Without dead ends: 31 [2022-11-18 21:08:54,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:08:54,085 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:54,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 26 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:08:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-18 21:08:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-18 21:08:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-18 21:08:54,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2022-11-18 21:08:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:54,092 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-18 21:08:54,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-18 21:08:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 21:08:54,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:54,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:54,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:54,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:54,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1032594067, now seen corresponding path program 4 times [2022-11-18 21:08:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:54,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993545217] [2022-11-18 21:08:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:56,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:56,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993545217] [2022-11-18 21:08:56,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993545217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:56,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529241601] [2022-11-18 21:08:56,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:08:56,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:56,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:56,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:08:56,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:08:56,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:56,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-18 21:08:56,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:56,334 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 10 treesize of output 8 [2022-11-18 21:08:56,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:08:56,375 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 14 treesize of output 16 [2022-11-18 21:08:56,425 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 14 treesize of output 16 [2022-11-18 21:08:56,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 21:08:56,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:08:56,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-11-18 21:08:56,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:08:56,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:08:56,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-11-18 21:08:57,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-11-18 21:08:57,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2022-11-18 21:08:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:57,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:58,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:58,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 264 treesize of output 124 [2022-11-18 21:09:09,285 WARN L233 SmtUtils]: Spent 10.49s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:09:23,817 WARN L233 SmtUtils]: Spent 14.22s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:09:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:23,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529241601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:23,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:23,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 50 [2022-11-18 21:09:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008913226] [2022-11-18 21:09:23,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 21:09:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 21:09:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2068, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 21:09:23,946 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:56,017 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-11-18 21:09:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 21:09:56,017 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 21:09:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:56,018 INFO L225 Difference]: With dead ends: 85 [2022-11-18 21:09:56,018 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 21:09:56,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=1335, Invalid=6675, Unknown=0, NotChecked=0, Total=8010 [2022-11-18 21:09:56,022 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 94 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:56,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 107 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 646 Invalid, 0 Unknown, 57 Unchecked, 4.3s Time] [2022-11-18 21:09:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 21:09:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 52. [2022-11-18 21:09:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-18 21:09:56,035 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 27 [2022-11-18 21:09:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:56,036 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-18 21:09:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-18 21:09:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 21:09:56,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:56,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:56,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:56,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 21:09:56,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash -774428629, now seen corresponding path program 1 times [2022-11-18 21:09:56,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:56,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634458430] [2022-11-18 21:09:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:56,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:09:57,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:57,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634458430] [2022-11-18 21:09:57,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634458430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:57,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091565062] [2022-11-18 21:09:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:57,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:57,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:57,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:57,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:09:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:57,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:09:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:57,220 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 [2022-11-18 21:09:57,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:09:57,355 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 23 treesize of output 22 [2022-11-18 21:09:57,412 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 [2022-11-18 21:09:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:09:57,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:57,632 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 [2022-11-18 21:09:57,638 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 20 treesize of output 16 [2022-11-18 21:09:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:09:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091565062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:57,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:57,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-11-18 21:09:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719997641] [2022-11-18 21:09:57,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:09:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:09:57,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:09:57,759 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:58,469 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-11-18 21:09:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:09:58,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 21:09:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:58,470 INFO L225 Difference]: With dead ends: 78 [2022-11-18 21:09:58,470 INFO L226 Difference]: Without dead ends: 54 [2022-11-18 21:09:58,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:09:58,471 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:58,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 59 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:09:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-18 21:09:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2022-11-18 21:09:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-11-18 21:09:58,484 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 27 [2022-11-18 21:09:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:58,484 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-11-18 21:09:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-11-18 21:09:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 21:09:58,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:58,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:58,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:58,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:58,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -132219249, now seen corresponding path program 5 times [2022-11-18 21:09:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214417256] [2022-11-18 21:09:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:09:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:59,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214417256] [2022-11-18 21:09:59,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214417256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:59,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531097760] [2022-11-18 21:09:59,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 21:09:59,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:59,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:59,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:59,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:09:59,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 21:09:59,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:59,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:09:59,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:09:59,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:09:59,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531097760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:59,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:59,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 21:09:59,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787420260] [2022-11-18 21:09:59,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:59,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:09:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:09:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:09:59,881 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:00,551 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2022-11-18 21:10:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:10:00,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 21:10:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:00,552 INFO L225 Difference]: With dead ends: 91 [2022-11-18 21:10:00,552 INFO L226 Difference]: Without dead ends: 53 [2022-11-18 21:10:00,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:10:00,553 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 69 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:00,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 34 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:10:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-18 21:10:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2022-11-18 21:10:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-18 21:10:00,563 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2022-11-18 21:10:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:00,563 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-18 21:10:00,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-18 21:10:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 21:10:00,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:00,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:00,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 21:10:00,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:00,770 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1292373713, now seen corresponding path program 6 times [2022-11-18 21:10:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:00,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027782062] [2022-11-18 21:10:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:00,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:10:01,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027782062] [2022-11-18 21:10:01,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027782062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583452756] [2022-11-18 21:10:01,122 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 21:10:01,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:01,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:01,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:10:01,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 21:10:01,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:10:01,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:10:01,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:10:01,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:10:01,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583452756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:01,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:01,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 21:10:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353248412] [2022-11-18 21:10:01,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:01,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:10:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:10:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:10:01,886 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:02,551 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-11-18 21:10:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:10:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 21:10:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:02,552 INFO L225 Difference]: With dead ends: 48 [2022-11-18 21:10:02,552 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 21:10:02,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:10:02,553 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:02,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 21 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:10:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 21:10:02,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-11-18 21:10:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-11-18 21:10:02,561 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2022-11-18 21:10:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:02,562 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-11-18 21:10:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-11-18 21:10:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 21:10:02,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:02,563 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:02,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:02,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:10:02,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:02,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1250534543, now seen corresponding path program 7 times [2022-11-18 21:10:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:02,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974065463] [2022-11-18 21:10:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:09,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:09,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974065463] [2022-11-18 21:10:09,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974065463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:09,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726772605] [2022-11-18 21:10:09,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 21:10:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:09,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:09,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:10:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:09,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 21:10:09,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:09,483 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 11 treesize of output 7 [2022-11-18 21:10:09,497 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 10 treesize of output 8 [2022-11-18 21:10:09,525 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 14 treesize of output 16 [2022-11-18 21:10:09,728 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 14 treesize of output 16 [2022-11-18 21:10:09,910 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 14 treesize of output 16 [2022-11-18 21:10:10,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 21:10:11,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:11,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-11-18 21:10:12,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:12,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2022-11-18 21:10:12,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:10:12,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:12,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:12,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2022-11-18 21:10:13,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:13,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:13,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:10:13,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 52 [2022-11-18 21:10:13,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 48 [2022-11-18 21:10:14,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 38 [2022-11-18 21:10:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:14,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:23,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:10:23,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 836 treesize of output 258 [2022-11-18 21:10:25,928 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (< (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4)))))) (+ .cse6 1)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (not (= (select v_arrayElimArr_4 .cse4) 4)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (< .cse6 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse7 .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4) 1)))))) (not (= (select v_arrayElimArr_4 .cse4) 4)))))) is different from false [2022-11-18 21:10:28,450 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse0) 4)) (< (+ .cse1 3) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))) (not (= (select v_arrayElimArr_4 .cse6) 4)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse0) 4)) (< (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse7 .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))) (+ 5 .cse1)) (not (= (select v_arrayElimArr_4 .cse6) 4)))))) is different from false [2022-11-18 21:10:31,538 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (< (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4)))))) (+ .cse6 9)) (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (not (= (select v_arrayElimArr_4 .cse4) 4)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (not (= (select v_arrayElimArr_4 .cse4) 4)) (< (+ 7 .cse6) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse7 .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))))))))) is different from false [2022-11-18 21:10:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-18 21:10:31,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726772605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:31,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:31,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 66 [2022-11-18 21:10:31,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924021515] [2022-11-18 21:10:31,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:31,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 21:10:31,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 21:10:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3412, Unknown=3, NotChecked=372, Total=4290 [2022-11-18 21:10:31,698 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 66 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:48,125 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2022-11-18 21:11:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 21:11:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 21:11:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:48,127 INFO L225 Difference]: With dead ends: 86 [2022-11-18 21:11:48,127 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 21:11:48,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 93.6s TimeCoverageRelationStatistics Valid=772, Invalid=4918, Unknown=22, NotChecked=450, Total=6162 [2022-11-18 21:11:48,130 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 66 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:48,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 141 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1021 Invalid, 0 Unknown, 158 Unchecked, 5.5s Time] [2022-11-18 21:11:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 21:11:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-11-18 21:11:48,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-11-18 21:11:48,142 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 34 [2022-11-18 21:11:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:48,143 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-11-18 21:11:48,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-11-18 21:11:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 21:11:48,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:48,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:48,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:48,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2033315503, now seen corresponding path program 2 times [2022-11-18 21:11:48,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:48,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969530784] [2022-11-18 21:11:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:11:49,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:49,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969530784] [2022-11-18 21:11:49,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969530784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:11:49,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575020720] [2022-11-18 21:11:49,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:11:49,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:49,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:49,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:49,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:11:49,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:11:49,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:49,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 21:11:49,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:50,072 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 [2022-11-18 21:11:50,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:11:50,445 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 [2022-11-18 21:11:50,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:11:50,686 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 [2022-11-18 21:11:50,834 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 [2022-11-18 21:11:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:11:50,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:51,364 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 [2022-11-18 21:11:51,374 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 20 treesize of output 16 [2022-11-18 21:11:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:11:51,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575020720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:51,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:11:51,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2022-11-18 21:11:51,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806975477] [2022-11-18 21:11:51,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:51,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 21:11:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 21:11:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:11:51,607 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:54,214 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-11-18 21:11:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:11:54,215 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 21:11:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:54,216 INFO L225 Difference]: With dead ends: 75 [2022-11-18 21:11:54,216 INFO L226 Difference]: Without dead ends: 60 [2022-11-18 21:11:54,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 21:11:54,217 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 79 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 21:11:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-18 21:11:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2022-11-18 21:11:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-11-18 21:11:54,230 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 34 [2022-11-18 21:11:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:54,230 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-11-18 21:11:54,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-11-18 21:11:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 21:11:54,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:54,232 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:54,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:54,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 21:11:54,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash 880380819, now seen corresponding path program 8 times [2022-11-18 21:11:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:54,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752472563] [2022-11-18 21:11:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:54,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:11:54,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:54,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752472563] [2022-11-18 21:11:54,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752472563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:11:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144673743] [2022-11-18 21:11:54,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:11:54,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:54,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:54,971 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:54,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:11:55,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:11:55,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:55,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:11:55,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:11:55,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:11:56,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144673743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:56,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:11:56,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 21:11:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216284913] [2022-11-18 21:11:56,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:11:56,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:11:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:11:56,259 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:57,114 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-11-18 21:11:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:11:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 21:11:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:57,116 INFO L225 Difference]: With dead ends: 97 [2022-11-18 21:11:57,116 INFO L226 Difference]: Without dead ends: 62 [2022-11-18 21:11:57,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:11:57,117 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 109 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:57,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 35 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:11:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-18 21:11:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-11-18 21:11:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-11-18 21:11:57,130 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 36 [2022-11-18 21:11:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:57,131 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-11-18 21:11:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-11-18 21:11:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 21:11:57,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:57,132 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:57,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:57,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:57,338 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:57,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:57,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1466624367, now seen corresponding path program 9 times [2022-11-18 21:11:57,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:57,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739401357] [2022-11-18 21:11:57,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:57,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:11:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:57,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739401357] [2022-11-18 21:11:57,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739401357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:11:57,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649426865] [2022-11-18 21:11:57,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:11:57,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:57,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:57,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:11:57,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 21:11:57,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:57,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:11:57,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:11:58,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:11:58,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649426865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:58,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:11:58,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 21:11:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642647947] [2022-11-18 21:11:58,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:58,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:11:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:11:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:11:58,991 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:12:00,257 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-11-18 21:12:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:12:00,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 21:12:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:12:00,258 INFO L225 Difference]: With dead ends: 57 [2022-11-18 21:12:00,258 INFO L226 Difference]: Without dead ends: 45 [2022-11-18 21:12:00,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-18 21:12:00,259 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:12:00,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 38 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:12:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-18 21:12:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-11-18 21:12:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-11-18 21:12:00,269 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 36 [2022-11-18 21:12:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:12:00,269 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-11-18 21:12:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-11-18 21:12:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 21:12:00,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:12:00,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:12:00,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-18 21:12:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 21:12:00,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:12:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:12:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1118330549, now seen corresponding path program 10 times [2022-11-18 21:12:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:12:00,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749956465] [2022-11-18 21:12:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:12:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:12:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:12:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:12:11,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749956465] [2022-11-18 21:12:11,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749956465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:12:11,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933535080] [2022-11-18 21:12:11,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:12:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:12:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:12:11,031 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:12:11,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:12:11,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:12:11,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:12:11,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-18 21:12:11,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:12:11,181 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 11 treesize of output 7 [2022-11-18 21:12:11,207 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 10 treesize of output 8 [2022-11-18 21:12:11,435 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 14 treesize of output 16 [2022-11-18 21:12:11,809 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 14 treesize of output 16 [2022-11-18 21:12:12,094 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 14 treesize of output 16 [2022-11-18 21:12:12,387 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 14 treesize of output 16 [2022-11-18 21:12:13,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 21:12:14,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 42 [2022-11-18 21:12:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:15,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:15,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 49 [2022-11-18 21:12:16,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:16,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:16,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:16,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2022-11-18 21:12:17,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:12:17,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:17,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:17,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-18 21:12:18,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:18,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:18,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:12:18,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 66 [2022-11-18 21:12:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:19,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:12:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:19,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:19,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 71 [2022-11-18 21:12:20,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:20,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:12:20,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:12:20,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-11-18 21:12:21,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36 [2022-11-18 21:12:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:12:21,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:12:47,863 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:12:47,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 2294 treesize of output 526 [2022-11-18 21:12:53,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-18 21:12:53,639 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-18 21:12:53,641 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 21:12:53,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:12:53,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:12:53,842 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 53 more [2022-11-18 21:12:53,845 INFO L158 Benchmark]: Toolchain (without parser) took 246217.99ms. Allocated memory was 102.8MB in the beginning and 209.7MB in the end (delta: 107.0MB). Free memory was 78.1MB in the beginning and 84.0MB in the end (delta: -6.0MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2022-11-18 21:12:53,845 INFO L158 Benchmark]: CDTParser took 0.99ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:12:53,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.22ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.8MB in the end (delta: 931.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:12:53,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.87ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 75.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:12:53,846 INFO L158 Benchmark]: Boogie Preprocessor took 25.48ms. Allocated memory is still 102.8MB. Free memory was 75.1MB in the beginning and 73.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:12:53,846 INFO L158 Benchmark]: RCFGBuilder took 436.16ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 61.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 21:12:53,846 INFO L158 Benchmark]: TraceAbstraction took 245411.54ms. Allocated memory was 102.8MB in the beginning and 209.7MB in the end (delta: 107.0MB). Free memory was 61.2MB in the beginning and 84.0MB in the end (delta: -22.8MB). Peak memory consumption was 88.9MB. Max. memory is 16.1GB. [2022-11-18 21:12:53,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.22ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.8MB in the end (delta: 931.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.87ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 75.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.48ms. Allocated memory is still 102.8MB. Free memory was 75.1MB in the beginning and 73.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 436.16ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 61.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 245411.54ms. Allocated memory was 102.8MB in the beginning and 209.7MB in the end (delta: 107.0MB). Free memory was 61.2MB in the beginning and 84.0MB in the end (delta: -22.8MB). Peak memory consumption was 88.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3lif.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro --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 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a --- 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-8393723 [2022-11-18 21:12:55,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:12:55,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:12:55,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:12:55,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:12:55,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:12:55,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:12:55,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:12:55,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:12:55,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:12:55,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:12:55,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:12:55,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:12:55,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:12:55,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:12:55,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:12:55,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:12:55,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:12:55,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:12:55,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:12:55,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:12:55,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:12:55,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:12:55,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:12:55,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:12:55,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:12:55,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:12:55,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:12:55,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:12:55,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:12:55,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:12:55,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:12:55,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:12:55,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:12:55,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:12:55,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:12:55,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:12:55,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:12:55,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:12:55,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:12:55,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:12:55,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 21:12:55,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:12:55,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:12:55,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:12:55,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:12:55,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:12:55,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:12:55,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:12:55,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:12:55,913 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:12:55,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:12:55,913 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:12:55,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:12:55,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:12:55,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:12:55,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:12:55,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:12:55,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 21:12:55,915 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 21:12:55,916 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 21:12:55,916 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:12:55,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:12:55,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:12:55,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:12:55,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:12:55,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:12:55,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:12:55,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:12:55,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:12:55,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:12:55,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:12:55,919 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 21:12:55,919 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 21:12:55,919 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:12:55,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:12:55,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:12:55,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 21:12:55,920 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a [2022-11-18 21:12:56,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:12:56,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:12:56,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:12:56,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:12:56,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:12:56,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/s3lif.c [2022-11-18 21:12:56,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/54e59e1ac/200a91f001204534b40a933e9f39a156/FLAG04c4c552e [2022-11-18 21:12:56,886 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:12:56,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/sv-benchmarks/c/array-fpi/s3lif.c [2022-11-18 21:12:56,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/54e59e1ac/200a91f001204534b40a933e9f39a156/FLAG04c4c552e [2022-11-18 21:12:57,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/data/54e59e1ac/200a91f001204534b40a933e9f39a156 [2022-11-18 21:12:57,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:12:57,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:12:57,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:12:57,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:12:57,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:12:57,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1227bda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57, skipping insertion in model container [2022-11-18 21:12:57,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:12:57,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:12:57,424 WARN L234 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_2f8126d5-cc27-492d-8894-ba3600cd47e4/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2022-11-18 21:12:57,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:12:57,455 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:12:57,468 WARN L234 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_2f8126d5-cc27-492d-8894-ba3600cd47e4/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2022-11-18 21:12:57,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:12:57,496 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:12:57,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57 WrapperNode [2022-11-18 21:12:57,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:12:57,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:12:57,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:12:57,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:12:57,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,560 INFO L138 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-11-18 21:12:57,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:12:57,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:12:57,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:12:57,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:12:57,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:12:57,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:12:57,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:12:57,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:12:57,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (1/1) ... [2022-11-18 21:12:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:12:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:12:57,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:12:57,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:12:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:12:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 21:12:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:12:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-18 21:12:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:12:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 21:12:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:12:57,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:12:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-18 21:12:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:12:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 21:12:57,799 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:12:57,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:12:58,057 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:12:58,088 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:12:58,089 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:12:58,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:12:58 BoogieIcfgContainer [2022-11-18 21:12:58,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:12:58,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:12:58,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:12:58,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:12:58,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:12:57" (1/3) ... [2022-11-18 21:12:58,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d719fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:12:58, skipping insertion in model container [2022-11-18 21:12:58,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:12:57" (2/3) ... [2022-11-18 21:12:58,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d719fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:12:58, skipping insertion in model container [2022-11-18 21:12:58,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:12:58" (3/3) ... [2022-11-18 21:12:58,099 INFO L112 eAbstractionObserver]: Analyzing ICFG s3lif.c [2022-11-18 21:12:58,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:12:58,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:12:58,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:12:58,238 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;@6eb24714, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:12:58,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:12:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 21:12:58,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:12:58,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:12:58,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:12:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:12:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2022-11-18 21:12:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:12:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216105932] [2022-11-18 21:12:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:12:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:12:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:12:58,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:12:58,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 21:12:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 21:12:58,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:12:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:12:58,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:12:58,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:12:58,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216105932] [2022-11-18 21:12:58,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216105932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:12:58,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:12:58,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:12:58,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351964875] [2022-11-18 21:12:58,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:12:58,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:12:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:12:58,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:12:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:12:58,526 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:12:58,544 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-11-18 21:12:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:12:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 21:12:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:12:58,564 INFO L225 Difference]: With dead ends: 40 [2022-11-18 21:12:58,564 INFO L226 Difference]: Without dead ends: 18 [2022-11-18 21:12:58,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:12:58,576 INFO L413 NwaCegarLoop]: 26 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, 26 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 [2022-11-18 21:12:58,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:12:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-18 21:12:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-18 21:12:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-18 21:12:58,616 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2022-11-18 21:12:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:12:58,616 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-18 21:12:58,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-18 21:12:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 21:12:58,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:12:58,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:12:58,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:12:58,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:12:58,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:12:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:12:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2022-11-18 21:12:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:12:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617595659] [2022-11-18 21:12:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:12:58,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:12:58,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:12:58,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:12:58,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 21:12:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:58,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:12:58,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:12:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:12:59,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:12:59,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:12:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617595659] [2022-11-18 21:12:59,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617595659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:12:59,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:12:59,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:12:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013323582] [2022-11-18 21:12:59,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:12:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:12:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:12:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:12:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:12:59,232 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:12:59,442 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-18 21:12:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:12:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 21:12:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:12:59,443 INFO L225 Difference]: With dead ends: 36 [2022-11-18 21:12:59,443 INFO L226 Difference]: Without dead ends: 25 [2022-11-18 21:12:59,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:12:59,445 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:12:59,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 9 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:12:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-18 21:12:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-11-18 21:12:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-18 21:12:59,453 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2022-11-18 21:12:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:12:59,454 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-18 21:12:59,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:12:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-18 21:12:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:12:59,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:12:59,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:12:59,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:12:59,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:12:59,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:12:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:12:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2022-11-18 21:12:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:12:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225649286] [2022-11-18 21:12:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:12:59,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:12:59,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:12:59,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:12:59,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 21:12:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:59,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 21:12:59,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:12:59,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:12:59,919 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 18 treesize of output 19 [2022-11-18 21:12:59,947 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 10 treesize of output 8 [2022-11-18 21:13:00,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:00,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-11-18 21:13:00,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:00,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2022-11-18 21:13:00,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:00,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 47 [2022-11-18 21:13:00,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:01,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 52 [2022-11-18 21:13:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:13:01,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:13:05,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:13:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:13:06,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:13:06,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225649286] [2022-11-18 21:13:06,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225649286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:13:06,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:13:06,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-18 21:13:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991478195] [2022-11-18 21:13:06,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:13:06,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 21:13:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:13:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 21:13:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:13:06,275 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:13:11,154 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-11-18 21:13:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:13:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 21:13:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:13:11,155 INFO L225 Difference]: With dead ends: 50 [2022-11-18 21:13:11,155 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 21:13:11,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 21:13:11,157 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 65 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:13:11,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 57 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 261 Invalid, 0 Unknown, 47 Unchecked, 1.9s Time] [2022-11-18 21:13:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 21:13:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-18 21:13:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-18 21:13:11,167 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2022-11-18 21:13:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:13:11,168 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-18 21:13:11,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-18 21:13:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:13:11,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:13:11,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:13:11,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-18 21:13:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:11,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:13:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:13:11,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2022-11-18 21:13:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:13:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230703029] [2022-11-18 21:13:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:13:11,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:11,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:13:11,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:13:11,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 21:13:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:13:11,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:13:11,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:13:11,485 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 11 treesize of output 7 [2022-11-18 21:13:11,530 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 [2022-11-18 21:13:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:13:11,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:13:11,597 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 14 treesize of output 12 [2022-11-18 21:13:11,601 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 18 treesize of output 16 [2022-11-18 21:13:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:13:11,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:13:11,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230703029] [2022-11-18 21:13:11,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230703029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:13:11,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:13:11,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-18 21:13:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254590042] [2022-11-18 21:13:11,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:13:11,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:13:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:13:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:13:11,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:13:11,625 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:13:11,854 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-11-18 21:13:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:13:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 21:13:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:13:11,859 INFO L225 Difference]: With dead ends: 49 [2022-11-18 21:13:11,859 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 21:13:11,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:13:11,861 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:13:11,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:13:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 21:13:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-11-18 21:13:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-18 21:13:11,872 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2022-11-18 21:13:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:13:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-18 21:13:11,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-18 21:13:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 21:13:11,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:13:11,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:13:11,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:13:12,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:12,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:13:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:13:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash -949569453, now seen corresponding path program 2 times [2022-11-18 21:13:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:13:12,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852885546] [2022-11-18 21:13:12,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:13:12,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:13:12,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:13:12,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 21:13:12,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:13:12,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:13:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:13:12,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:13:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:13:12,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:13:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:13:12,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:13:12,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852885546] [2022-11-18 21:13:12,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852885546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:13:12,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:13:12,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-18 21:13:12,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679111357] [2022-11-18 21:13:12,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:13:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:13:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:13:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:13:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:13:12,637 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:13:13,341 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2022-11-18 21:13:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:13:13,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 21:13:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:13:13,343 INFO L225 Difference]: With dead ends: 63 [2022-11-18 21:13:13,343 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 21:13:13,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:13:13,345 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 120 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:13:13,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 23 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:13:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 21:13:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2022-11-18 21:13:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-18 21:13:13,359 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2022-11-18 21:13:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:13:13,359 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-18 21:13:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:13,360 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-18 21:13:13,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 21:13:13,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:13:13,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:13:13,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:13:13,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:13,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:13:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:13:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2105967953, now seen corresponding path program 3 times [2022-11-18 21:13:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:13:13,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34877035] [2022-11-18 21:13:13,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:13:13,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:13,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:13:13,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:13:13,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 21:13:13,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 21:13:13,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:13:13,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:13:13,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:13:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:13:13,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:13:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:13:14,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:13:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34877035] [2022-11-18 21:13:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34877035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:13:14,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:13:14,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-11-18 21:13:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312447138] [2022-11-18 21:13:14,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:13:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:13:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:13:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:13:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:13:14,322 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:13:15,373 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2022-11-18 21:13:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:13:15,375 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 21:13:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:13:15,376 INFO L225 Difference]: With dead ends: 72 [2022-11-18 21:13:15,376 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 21:13:15,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:13:15,378 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 217 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:13:15,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 23 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:13:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 21:13:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2022-11-18 21:13:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-11-18 21:13:15,390 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 22 [2022-11-18 21:13:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:13:15,391 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-11-18 21:13:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:13:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-11-18 21:13:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 21:13:15,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:13:15,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:13:15,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-18 21:13:15,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:15,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:13:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:13:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1032594067, now seen corresponding path program 4 times [2022-11-18 21:13:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:13:15,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485142722] [2022-11-18 21:13:15,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:13:15,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:13:15,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:13:15,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:13:15,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 21:13:15,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:13:15,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:13:15,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 21:13:15,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:13:15,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:13:15,846 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 18 treesize of output 19 [2022-11-18 21:13:15,868 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 10 treesize of output 8 [2022-11-18 21:13:15,941 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 25 [2022-11-18 21:13:16,054 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 25 [2022-11-18 21:13:16,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:16,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 21:13:16,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:16,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 49 [2022-11-18 21:13:17,279 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 21:13:17,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 99 treesize of output 70 [2022-11-18 21:13:17,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:17,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 73 [2022-11-18 21:13:17,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:13:17,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 83 [2022-11-18 21:13:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:13:17,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:14:00,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:14:00,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 653 treesize of output 289 [2022-11-18 21:14:08,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:14:08,597 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 21:14:08,597 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 562 treesize of output 1 [2022-11-18 21:14:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:14:08,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:14:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485142722] [2022-11-18 21:14:08,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485142722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:14:08,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:14:08,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2022-11-18 21:14:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178364573] [2022-11-18 21:14:08,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:14:08,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 21:14:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:14:08,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 21:14:08,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1058, Unknown=18, NotChecked=0, Total=1260 [2022-11-18 21:14:08,604 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:14:39,570 WARN L233 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 74 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:15:10,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:15:24,474 WARN L233 SmtUtils]: Spent 9.17s on a formula simplification. DAG size of input: 63 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:15:26,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:15:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:15:32,066 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2022-11-18 21:15:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 21:15:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 21:15:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:15:32,068 INFO L225 Difference]: With dead ends: 62 [2022-11-18 21:15:32,068 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 21:15:32,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 126.9s TimeCoverageRelationStatistics Valid=459, Invalid=2578, Unknown=43, NotChecked=0, Total=3080 [2022-11-18 21:15:32,070 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 96 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:15:32,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 60 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 338 Invalid, 2 Unknown, 223 Unchecked, 7.0s Time] [2022-11-18 21:15:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 21:15:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-18 21:15:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-18 21:15:32,087 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 27 [2022-11-18 21:15:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:15:32,087 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-18 21:15:32,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-18 21:15:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 21:15:32,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:15:32,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:15:32,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-18 21:15:32,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:15:32,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:15:32,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:15:32,291 INFO L85 PathProgramCache]: Analyzing trace with hash -774428629, now seen corresponding path program 1 times [2022-11-18 21:15:32,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:15:32,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916282747] [2022-11-18 21:15:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:15:32,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:15:32,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:15:32,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:15:32,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 21:15:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:15:32,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:15:32,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:15:32,459 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 [2022-11-18 21:15:32,616 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 21:15:32,616 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 [2022-11-18 21:15:32,692 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 [2022-11-18 21:15:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:15:32,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:15:32,926 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 [2022-11-18 21:15:32,933 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 20 treesize of output 16 [2022-11-18 21:15:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:15:33,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:15:33,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916282747] [2022-11-18 21:15:33,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916282747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:15:33,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:15:33,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-18 21:15:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565410176] [2022-11-18 21:15:33,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:15:33,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:15:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:15:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:15:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:15:33,062 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:15:33,843 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-11-18 21:15:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:15:33,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 21:15:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:15:33,845 INFO L225 Difference]: With dead ends: 69 [2022-11-18 21:15:33,845 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 21:15:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:15:33,846 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:15:33,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:15:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 21:15:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-11-18 21:15:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-18 21:15:33,856 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2022-11-18 21:15:33,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:15:33,856 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-18 21:15:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-18 21:15:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 21:15:33,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:15:33,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:15:33,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:15:34,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:15:34,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:15:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:15:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1292373713, now seen corresponding path program 5 times [2022-11-18 21:15:34,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:15:34,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206860694] [2022-11-18 21:15:34,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 21:15:34,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:15:34,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:15:34,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:15:34,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 21:15:34,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 21:15:34,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:15:34,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:15:34,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:15:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:15:35,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:15:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:15:36,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:15:36,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206860694] [2022-11-18 21:15:36,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206860694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:15:36,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:15:36,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2022-11-18 21:15:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56971485] [2022-11-18 21:15:36,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:15:36,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 21:15:36,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:15:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 21:15:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:15:36,424 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:15:39,681 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2022-11-18 21:15:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 21:15:39,682 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 21:15:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:15:39,683 INFO L225 Difference]: With dead ends: 88 [2022-11-18 21:15:39,683 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 21:15:39,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 21:15:39,684 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 392 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:15:39,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 25 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 21:15:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 21:15:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2022-11-18 21:15:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-11-18 21:15:39,697 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2022-11-18 21:15:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:15:39,697 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-11-18 21:15:39,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:15:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-11-18 21:15:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 21:15:39,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:15:39,698 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:15:39,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-18 21:15:39,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:15:39,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:15:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:15:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1250534543, now seen corresponding path program 6 times [2022-11-18 21:15:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:15:39,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961766188] [2022-11-18 21:15:39,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 21:15:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:15:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:15:39,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:15:39,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 21:15:40,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 21:15:40,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:15:40,116 WARN L261 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 21:15:40,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:15:40,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:15:40,263 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 18 treesize of output 19 [2022-11-18 21:15:40,298 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 10 treesize of output 8 [2022-11-18 21:15:40,412 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 25 [2022-11-18 21:15:40,580 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 25 [2022-11-18 21:15:40,802 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 25 [2022-11-18 21:15:41,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:15:41,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 21:15:42,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:15:42,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 56 [2022-11-18 21:15:42,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:15:42,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 61 [2022-11-18 21:15:43,586 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-18 21:15:43,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 108 treesize of output 82 [2022-11-18 21:15:44,269 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-18 21:15:44,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 130 treesize of output 96 [2022-11-18 21:15:45,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:15:45,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 174 treesize of output 113 [2022-11-18 21:15:46,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:15:46,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 256 treesize of output 142 [2022-11-18 21:15:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:15:46,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:17:51,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:17:51,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 3961 treesize of output 1239 [2022-11-18 21:18:17,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:18:17,540 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 21:18:17,540 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 2506 treesize of output 1 [2022-11-18 21:18:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:18:17,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:18:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961766188] [2022-11-18 21:18:17,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961766188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:18:17,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:18:17,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 47 [2022-11-18 21:18:17,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315667612] [2022-11-18 21:18:17,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:18:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 21:18:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:18:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 21:18:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1819, Unknown=34, NotChecked=0, Total=2162 [2022-11-18 21:18:17,547 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:18:50,698 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 242 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:19:40,434 WARN L233 SmtUtils]: Spent 18.99s on a formula simplification. DAG size of input: 114 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:20:05,134 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 142 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:20:08,726 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse77 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse76 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| .cse77)) (.cse73 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse74 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32) .cse77))) (let ((.cse61 (select .cse73 .cse74)) (.cse60 (select .cse73 .cse76))) (let ((.cse18 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32) .cse77)) (.cse59 (store .cse73 .cse76 (bvadd (_ bv3 32) .cse60))) (.cse75 (bvadd (_ bv3 32) .cse61))) (let ((.cse20 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv4 32)))) (.cse9 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32))) (.cse11 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (.cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse17 (store .cse59 .cse74 .cse75)) (.cse72 (select .cse73 .cse18))) (let ((.cse1 (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (.cse21 (not (= .cse72 (_ bv1 32)))) (.cse34 (store .cse73 .cse74 .cse75)) (.cse19 (bvadd (_ bv3 32) .cse72)) (.cse47 (= .cse20 (let ((.cse62 (let ((.cse65 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17))) (let ((.cse70 (select .cse65 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse71 (bvadd ((_ sign_extend 32) (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse70 .cse8) (select .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse69 ((_ extract 31 0) .cse71)) (.cse68 ((_ extract 63 32) .cse71))) (let ((.cse66 (store (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse69) .cse8 .cse68))) (let ((.cse67 (bvadd (concat .cse68 .cse69) ((_ sign_extend 32) (select (select (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse66) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))))) (let ((.cse64 ((_ extract 31 0) .cse67)) (.cse63 ((_ extract 63 32) .cse67))) (bvadd (concat .cse63 .cse64) ((_ sign_extend 32) (select (select (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse64) .cse8 .cse63)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9)))))))))))) (concat ((_ extract 63 32) .cse62) ((_ extract 31 0) .cse62))))) (.cse2 (not (= (_ bv1 32) |c_ULTIMATE.start_main_#t~mem8#1|))) (.cse22 (not (bvslt (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (.cse23 (not (= .cse61 (_ bv1 32)))) (.cse0 (bvule c_~N~0 (_ bv536870911 32))) (.cse46 (not (= .cse60 (_ bv1 32)))) (.cse48 (not (bvslt |c_ULTIMATE.start_main_~i~0#1| c_~N~0)))) (and (or (and .cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and (not .cse0) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) (or .cse1 .cse2 (= (let ((.cse3 (let ((.cse16 (store .cse17 .cse18 .cse19))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16))) (let ((.cse14 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse15 (bvadd (concat (select .cse14 .cse8) (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse13 ((_ extract 31 0) .cse15)) (.cse12 ((_ extract 63 32) .cse15))) (let ((.cse7 (store (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse13) .cse8 .cse12))) (let ((.cse10 (bvadd ((_ sign_extend 32) (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11)) (concat .cse12 .cse13)))) (let ((.cse5 ((_ extract 31 0) .cse10)) (.cse4 ((_ extract 63 32) .cse10))) (bvadd (concat .cse4 .cse5) ((_ sign_extend 32) (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse5) .cse8 .cse4)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))))))))))))) (concat ((_ extract 63 32) .cse3) ((_ extract 31 0) .cse3))) .cse20) .cse21 .cse22 .cse23) (or (= .cse20 (let ((.cse24 (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse34))) (let ((.cse32 (select .cse25 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse33 (bvadd ((_ sign_extend 32) (select .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse32 .cse8) (select .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse31 ((_ extract 31 0) .cse33)) (.cse30 ((_ extract 63 32) .cse33))) (let ((.cse26 (store (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse31) .cse8 .cse30))) (let ((.cse29 (bvadd (concat .cse30 .cse31) ((_ sign_extend 32) (select (select (store .cse25 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse26) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))))) (let ((.cse28 ((_ extract 63 32) .cse29)) (.cse27 ((_ extract 31 0) .cse29))) (bvadd ((_ sign_extend 32) (select (select (store .cse25 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse27) .cse8 .cse28)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9)) (concat .cse28 .cse27))))))))))) (concat ((_ extract 63 32) .cse24) ((_ extract 31 0) .cse24)))) .cse22 .cse23) (not (bvsle c_~N~0 (_ bv0 32))) (or .cse1 .cse21 .cse22 (= (let ((.cse35 (let ((.cse45 (store .cse34 .cse18 .cse19))) (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse45))) (let ((.cse43 (select .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse44 (bvadd ((_ sign_extend 32) (select .cse45 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse43 .cse8) (select .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse42 ((_ extract 31 0) .cse44)) (.cse41 ((_ extract 63 32) .cse44))) (let ((.cse37 (store (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse42) .cse8 .cse41))) (let ((.cse40 (bvadd ((_ sign_extend 32) (select (select (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse37) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11)) (concat .cse41 .cse42)))) (let ((.cse39 ((_ extract 63 32) .cse40)) (.cse38 ((_ extract 31 0) .cse40))) (bvadd ((_ sign_extend 32) (select (select (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse38) .cse8 .cse39)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9)) (concat .cse39 .cse38)))))))))))) (concat ((_ extract 63 32) .cse35) ((_ extract 31 0) .cse35))) .cse20) .cse23) (or .cse46 .cse47 .cse48 .cse22 .cse23) (or .cse47 .cse2 .cse22 .cse23) .cse0 (or .cse46 (= (let ((.cse49 (let ((.cse52 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse59))) (let ((.cse57 (select .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse58 (bvadd (concat (select .cse57 .cse8) (select .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse59 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse56 ((_ extract 31 0) .cse58)) (.cse55 ((_ extract 63 32) .cse58))) (let ((.cse53 (store (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse56) .cse8 .cse55))) (let ((.cse54 (bvadd ((_ sign_extend 32) (select (select (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse53) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11)) (concat .cse55 .cse56)))) (let ((.cse51 ((_ extract 31 0) .cse54)) (.cse50 ((_ extract 63 32) .cse54))) (bvadd (concat .cse50 .cse51) ((_ sign_extend 32) (select (select (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse53 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse51) .cse8 .cse50)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9)))))))))))) (concat ((_ extract 63 32) .cse49) ((_ extract 31 0) .cse49))) .cse20) .cse48)))))))) is different from true [2022-11-18 21:20:42,091 WARN L233 SmtUtils]: Spent 9.92s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:20:45,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:20:47,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:20:49,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:20:50,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:20:53,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:02,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:05,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:07,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:09,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:10,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:12,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:14,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:17,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:21,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:21:27,581 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 74 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:21:30,153 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse85 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse84 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| .cse85)) (.cse81 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse82 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32) .cse85))) (let ((.cse69 (select .cse81 .cse82)) (.cse68 (select .cse81 .cse84))) (let ((.cse26 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32) .cse85)) (.cse67 (store .cse81 .cse84 (bvadd (_ bv3 32) .cse68))) (.cse83 (bvadd (_ bv3 32) .cse69))) (let ((.cse28 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv4 32)))) (.cse17 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32))) (.cse19 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse25 (store .cse67 .cse82 .cse83)) (.cse80 (select .cse81 .cse26))) (let ((.cse10 (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (.cse29 (not (= .cse80 (_ bv1 32)))) (.cse42 (store .cse81 .cse82 .cse83)) (.cse27 (bvadd (_ bv3 32) .cse80)) (.cse55 (= .cse28 (let ((.cse70 (let ((.cse73 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse78 (select .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse79 (bvadd ((_ sign_extend 32) (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse78 .cse4) (select .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse77 ((_ extract 31 0) .cse79)) (.cse76 ((_ extract 63 32) .cse79))) (let ((.cse74 (store (store .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse77) .cse4 .cse76))) (let ((.cse75 (bvadd (concat .cse76 .cse77) ((_ sign_extend 32) (select (select (store .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse74) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19))))) (let ((.cse72 ((_ extract 31 0) .cse75)) (.cse71 ((_ extract 63 32) .cse75))) (bvadd (concat .cse71 .cse72) ((_ sign_extend 32) (select (select (store .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse72) .cse4 .cse71)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)))))))))))) (concat ((_ extract 63 32) .cse70) ((_ extract 31 0) .cse70))))) (.cse11 (not (= (_ bv1 32) |c_ULTIMATE.start_main_#t~mem8#1|))) (.cse30 (not (bvslt (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (.cse31 (not (= .cse69 (_ bv1 32)))) (.cse54 (not (= .cse68 (_ bv1 32)))) (.cse56 (not (bvslt |c_ULTIMATE.start_main_~i~0#1| c_~N~0)))) (and (let ((.cse0 (bvule c_~N~0 (_ bv536870911 32)))) (or (and .cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and (not .cse0) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))))) (exists ((|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.base| (_ BitVec 32))) (let ((.cse9 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse6 (select .cse9 (bvadd (_ bv4 32) |ULTIMATE.start_main_~a~0#1.offset|))) (.cse5 (select .cse9 |ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (select .cse9 (bvadd (_ bv8 32) |ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (bvadd (let ((.cse7 (bvadd ((_ sign_extend 32) .cse6) (let ((.cse8 (bvadd ((_ sign_extend 32) .cse5) (concat ((_ extract 63 32) (_ bv0 64)) ((_ extract 31 0) (_ bv0 64)))))) (concat ((_ extract 63 32) .cse8) ((_ extract 31 0) .cse8)))))) (concat ((_ extract 63 32) .cse7) ((_ extract 31 0) .cse7))) ((_ sign_extend 32) .cse3)))) (and (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) ((_ extract 31 0) .cse2)) (= (_ bv4 32) .cse3) (= (select .cse1 .cse4) ((_ extract 63 32) .cse2)) (= (_ bv4 32) .cse5) (= (_ bv4 32) .cse6)))))) (not (bvslt (_ bv3 32) c_~N~0)) (or .cse10 .cse11 (= (let ((.cse12 (let ((.cse24 (store .cse25 .cse26 .cse27))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse22 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse23 (bvadd (concat (select .cse22 .cse4) (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse21 ((_ extract 31 0) .cse23)) (.cse20 ((_ extract 63 32) .cse23))) (let ((.cse16 (store (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse21) .cse4 .cse20))) (let ((.cse18 (bvadd ((_ sign_extend 32) (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse16) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19)) (concat .cse20 .cse21)))) (let ((.cse14 ((_ extract 31 0) .cse18)) (.cse13 ((_ extract 63 32) .cse18))) (bvadd (concat .cse13 .cse14) ((_ sign_extend 32) (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse14) .cse4 .cse13)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17))))))))))))) (concat ((_ extract 63 32) .cse12) ((_ extract 31 0) .cse12))) .cse28) .cse29 .cse30 .cse31) (or (= .cse28 (let ((.cse32 (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse42))) (let ((.cse40 (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse41 (bvadd ((_ sign_extend 32) (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse40 .cse4) (select .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse39 ((_ extract 31 0) .cse41)) (.cse38 ((_ extract 63 32) .cse41))) (let ((.cse34 (store (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse39) .cse4 .cse38))) (let ((.cse37 (bvadd (concat .cse38 .cse39) ((_ sign_extend 32) (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse34) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19))))) (let ((.cse36 ((_ extract 63 32) .cse37)) (.cse35 ((_ extract 31 0) .cse37))) (bvadd ((_ sign_extend 32) (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse35) .cse4 .cse36)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)) (concat .cse36 .cse35))))))))))) (concat ((_ extract 63 32) .cse32) ((_ extract 31 0) .cse32)))) .cse30 .cse31) (not (bvsle c_~N~0 (_ bv0 32))) (or .cse10 .cse29 .cse30 (= (let ((.cse43 (let ((.cse53 (store .cse42 .cse26 .cse27))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53))) (let ((.cse51 (select .cse44 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse52 (bvadd ((_ sign_extend 32) (select .cse53 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse51 .cse4) (select .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse50 ((_ extract 31 0) .cse52)) (.cse49 ((_ extract 63 32) .cse52))) (let ((.cse45 (store (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse50) .cse4 .cse49))) (let ((.cse48 (bvadd ((_ sign_extend 32) (select (select (store .cse44 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse45) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19)) (concat .cse49 .cse50)))) (let ((.cse47 ((_ extract 63 32) .cse48)) (.cse46 ((_ extract 31 0) .cse48))) (bvadd ((_ sign_extend 32) (select (select (store .cse44 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse45 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse46) .cse4 .cse47)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)) (concat .cse47 .cse46)))))))))))) (concat ((_ extract 63 32) .cse43) ((_ extract 31 0) .cse43))) .cse28) .cse31) (bvslt (_ bv2 32) c_~N~0) (or .cse54 .cse55 .cse56 .cse30 .cse31) (or .cse55 .cse11 .cse30 .cse31) (or .cse54 (= (let ((.cse57 (let ((.cse60 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse67))) (let ((.cse65 (select .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse66 (bvadd (concat (select .cse65 .cse4) (select .cse65 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse64 ((_ extract 31 0) .cse66)) (.cse63 ((_ extract 63 32) .cse66))) (let ((.cse61 (store (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse64) .cse4 .cse63))) (let ((.cse62 (bvadd ((_ sign_extend 32) (select (select (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse61) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19)) (concat .cse63 .cse64)))) (let ((.cse59 ((_ extract 31 0) .cse62)) (.cse58 ((_ extract 63 32) .cse62))) (bvadd (concat .cse58 .cse59) ((_ sign_extend 32) (select (select (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse61 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse59) .cse4 .cse58)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)))))))))))) (concat ((_ extract 63 32) .cse57) ((_ extract 31 0) .cse57))) .cse28) .cse56)))))))) is different from false [2022-11-18 21:21:32,178 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse85 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse84 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| .cse85)) (.cse81 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse82 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32) .cse85))) (let ((.cse69 (select .cse81 .cse82)) (.cse68 (select .cse81 .cse84))) (let ((.cse26 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32) .cse85)) (.cse67 (store .cse81 .cse84 (bvadd (_ bv3 32) .cse68))) (.cse83 (bvadd (_ bv3 32) .cse69))) (let ((.cse28 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv4 32)))) (.cse17 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv8 32))) (.cse19 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse25 (store .cse67 .cse82 .cse83)) (.cse80 (select .cse81 .cse26))) (let ((.cse10 (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (.cse29 (not (= .cse80 (_ bv1 32)))) (.cse42 (store .cse81 .cse82 .cse83)) (.cse27 (bvadd (_ bv3 32) .cse80)) (.cse55 (= .cse28 (let ((.cse70 (let ((.cse73 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse78 (select .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse79 (bvadd ((_ sign_extend 32) (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse78 .cse4) (select .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse77 ((_ extract 31 0) .cse79)) (.cse76 ((_ extract 63 32) .cse79))) (let ((.cse74 (store (store .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse77) .cse4 .cse76))) (let ((.cse75 (bvadd (concat .cse76 .cse77) ((_ sign_extend 32) (select (select (store .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse74) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19))))) (let ((.cse72 ((_ extract 31 0) .cse75)) (.cse71 ((_ extract 63 32) .cse75))) (bvadd (concat .cse71 .cse72) ((_ sign_extend 32) (select (select (store .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse72) .cse4 .cse71)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)))))))))))) (concat ((_ extract 63 32) .cse70) ((_ extract 31 0) .cse70))))) (.cse11 (not (= (_ bv1 32) |c_ULTIMATE.start_main_#t~mem8#1|))) (.cse30 (not (bvslt (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (.cse31 (not (= .cse69 (_ bv1 32)))) (.cse54 (not (= .cse68 (_ bv1 32)))) (.cse56 (not (bvslt |c_ULTIMATE.start_main_~i~0#1| c_~N~0)))) (and (let ((.cse0 (bvule c_~N~0 (_ bv536870911 32)))) (or (and .cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and (not .cse0) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))))) (exists ((|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.base| (_ BitVec 32))) (let ((.cse9 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse6 (select .cse9 (bvadd (_ bv4 32) |ULTIMATE.start_main_~a~0#1.offset|))) (.cse5 (select .cse9 |ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (select .cse9 (bvadd (_ bv8 32) |ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (bvadd (let ((.cse7 (bvadd ((_ sign_extend 32) .cse6) (let ((.cse8 (bvadd ((_ sign_extend 32) .cse5) (concat ((_ extract 63 32) (_ bv0 64)) ((_ extract 31 0) (_ bv0 64)))))) (concat ((_ extract 63 32) .cse8) ((_ extract 31 0) .cse8)))))) (concat ((_ extract 63 32) .cse7) ((_ extract 31 0) .cse7))) ((_ sign_extend 32) .cse3)))) (and (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) ((_ extract 31 0) .cse2)) (= (_ bv4 32) .cse3) (= (select .cse1 .cse4) ((_ extract 63 32) .cse2)) (= (_ bv4 32) .cse5) (= (_ bv4 32) .cse6)))))) (not (bvslt (_ bv3 32) c_~N~0)) (or .cse10 .cse11 (= (let ((.cse12 (let ((.cse24 (store .cse25 .cse26 .cse27))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse22 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse23 (bvadd (concat (select .cse22 .cse4) (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse21 ((_ extract 31 0) .cse23)) (.cse20 ((_ extract 63 32) .cse23))) (let ((.cse16 (store (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse21) .cse4 .cse20))) (let ((.cse18 (bvadd ((_ sign_extend 32) (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse16) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19)) (concat .cse20 .cse21)))) (let ((.cse14 ((_ extract 31 0) .cse18)) (.cse13 ((_ extract 63 32) .cse18))) (bvadd (concat .cse13 .cse14) ((_ sign_extend 32) (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse14) .cse4 .cse13)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17))))))))))))) (concat ((_ extract 63 32) .cse12) ((_ extract 31 0) .cse12))) .cse28) .cse29 .cse30 .cse31) (or (= .cse28 (let ((.cse32 (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse42))) (let ((.cse40 (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse41 (bvadd ((_ sign_extend 32) (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse40 .cse4) (select .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse39 ((_ extract 31 0) .cse41)) (.cse38 ((_ extract 63 32) .cse41))) (let ((.cse34 (store (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse39) .cse4 .cse38))) (let ((.cse37 (bvadd (concat .cse38 .cse39) ((_ sign_extend 32) (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse34) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19))))) (let ((.cse36 ((_ extract 63 32) .cse37)) (.cse35 ((_ extract 31 0) .cse37))) (bvadd ((_ sign_extend 32) (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse35) .cse4 .cse36)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)) (concat .cse36 .cse35))))))))))) (concat ((_ extract 63 32) .cse32) ((_ extract 31 0) .cse32)))) .cse30 .cse31) (not (bvsle c_~N~0 (_ bv0 32))) (or .cse10 .cse29 .cse30 (= (let ((.cse43 (let ((.cse53 (store .cse42 .cse26 .cse27))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53))) (let ((.cse51 (select .cse44 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse52 (bvadd ((_ sign_extend 32) (select .cse53 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse51 .cse4) (select .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse50 ((_ extract 31 0) .cse52)) (.cse49 ((_ extract 63 32) .cse52))) (let ((.cse45 (store (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse50) .cse4 .cse49))) (let ((.cse48 (bvadd ((_ sign_extend 32) (select (select (store .cse44 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse45) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19)) (concat .cse49 .cse50)))) (let ((.cse47 ((_ extract 63 32) .cse48)) (.cse46 ((_ extract 31 0) .cse48))) (bvadd ((_ sign_extend 32) (select (select (store .cse44 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse45 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse46) .cse4 .cse47)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)) (concat .cse47 .cse46)))))))))))) (concat ((_ extract 63 32) .cse43) ((_ extract 31 0) .cse43))) .cse28) .cse31) (bvslt (_ bv2 32) c_~N~0) (or .cse54 .cse55 .cse56 .cse30 .cse31) (or .cse55 .cse11 .cse30 .cse31) (or .cse54 (= (let ((.cse57 (let ((.cse60 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse67))) (let ((.cse65 (select .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse66 (bvadd (concat (select .cse65 .cse4) (select .cse65 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse64 ((_ extract 31 0) .cse66)) (.cse63 ((_ extract 63 32) .cse66))) (let ((.cse61 (store (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse64) .cse4 .cse63))) (let ((.cse62 (bvadd ((_ sign_extend 32) (select (select (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse61) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19)) (concat .cse63 .cse64)))) (let ((.cse59 ((_ extract 31 0) .cse62)) (.cse58 ((_ extract 63 32) .cse62))) (bvadd (concat .cse58 .cse59) ((_ sign_extend 32) (select (select (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base| (store (store .cse61 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse59) .cse4 .cse58)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse17)))))))))))) (concat ((_ extract 63 32) .cse57) ((_ extract 31 0) .cse57))) .cse28) .cse56)))))))) is different from true [2022-11-18 21:21:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:21:32,189 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2022-11-18 21:21:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 21:21:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 21:21:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:21:32,190 INFO L225 Difference]: With dead ends: 82 [2022-11-18 21:21:32,190 INFO L226 Difference]: Without dead ends: 68 [2022-11-18 21:21:32,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 298.3s TimeCoverageRelationStatistics Valid=724, Invalid=4070, Unknown=44, NotChecked=274, Total=5112 [2022-11-18 21:21:32,193 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 99 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 68 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 44.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:21:32,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 71 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 561 Invalid, 9 Unknown, 182 Unchecked, 44.5s Time] [2022-11-18 21:21:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-18 21:21:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2022-11-18 21:21:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-11-18 21:21:32,205 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 34 [2022-11-18 21:21:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:21:32,206 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-11-18 21:21:32,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-11-18 21:21:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 21:21:32,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:21:32,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:21:32,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-18 21:21:32,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:21:32,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:21:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:21:32,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2033315503, now seen corresponding path program 2 times [2022-11-18 21:21:32,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:21:32,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660202352] [2022-11-18 21:21:32,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:21:32,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:21:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:21:32,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:21:32,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 21:21:32,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:21:32,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:21:32,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:21:32,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:21:32,712 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 [2022-11-18 21:21:32,925 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 21:21:32,926 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 [2022-11-18 21:21:33,089 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 21:21:33,089 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 [2022-11-18 21:21:33,189 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 [2022-11-18 21:21:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:21:33,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:21:33,605 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 [2022-11-18 21:21:33,613 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 20 treesize of output 16 [2022-11-18 21:21:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:21:33,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:21:33,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660202352] [2022-11-18 21:21:33,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660202352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:21:33,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:21:33,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-18 21:21:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202629350] [2022-11-18 21:21:33,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:21:33,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:21:33,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:21:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:21:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:21:33,894 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:21:35,684 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2022-11-18 21:21:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:21:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 21:21:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:21:35,686 INFO L225 Difference]: With dead ends: 85 [2022-11-18 21:21:35,686 INFO L226 Difference]: Without dead ends: 49 [2022-11-18 21:21:35,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:21:35,687 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:21:35,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 83 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 21:21:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-18 21:21:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-11-18 21:21:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-11-18 21:21:35,696 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2022-11-18 21:21:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:21:35,697 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-11-18 21:21:35,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-11-18 21:21:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 21:21:35,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:21:35,698 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:21:35,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:21:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:21:35,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:21:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:21:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1466624367, now seen corresponding path program 7 times [2022-11-18 21:21:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:21:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857760828] [2022-11-18 21:21:35,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 21:21:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:21:35,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:21:35,911 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:21:35,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 21:21:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:21:36,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 21:21:36,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:21:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:21:37,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:21:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:21:40,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:21:40,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857760828] [2022-11-18 21:21:40,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857760828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:21:40,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:21:40,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2022-11-18 21:21:40,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504089740] [2022-11-18 21:21:40,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:21:40,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 21:21:40,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:21:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 21:21:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:21:40,296 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:21:45,688 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2022-11-18 21:21:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:21:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 21:21:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:21:45,689 INFO L225 Difference]: With dead ends: 104 [2022-11-18 21:21:45,690 INFO L226 Difference]: Without dead ends: 81 [2022-11-18 21:21:45,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=551, Invalid=1899, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 21:21:45,691 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 380 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:21:45,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 35 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 21:21:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-18 21:21:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-11-18 21:21:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 70 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-11-18 21:21:45,712 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 36 [2022-11-18 21:21:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:21:45,712 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-11-18 21:21:45,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:21:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-11-18 21:21:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 21:21:45,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:21:45,717 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:21:45,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:21:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:21:45,929 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:21:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:21:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1118330549, now seen corresponding path program 8 times [2022-11-18 21:21:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:21:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178094645] [2022-11-18 21:21:45,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:21:45,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:21:45,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:21:45,931 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:21:45,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8126d5-cc27-492d-8894-ba3600cd47e4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 21:21:46,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:21:46,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:21:46,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-18 21:21:46,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:21:46,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:21:46,372 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 18 treesize of output 19 [2022-11-18 21:21:46,400 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 10 treesize of output 8 [2022-11-18 21:21:46,536 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 25 [2022-11-18 21:21:46,770 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 25 [2022-11-18 21:21:47,121 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 25 [2022-11-18 21:21:47,503 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 25 [2022-11-18 21:21:48,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:21:48,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 21:21:48,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:21:48,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 56 [2022-11-18 21:21:49,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:21:49,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 71 [2022-11-18 21:21:51,097 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:21:51,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 73 [2022-11-18 21:21:52,105 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-18 21:21:52,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 117 treesize of output 94 [2022-11-18 21:21:53,014 INFO L321 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2022-11-18 21:21:53,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 149 treesize of output 120 [2022-11-18 21:22:04,762 WARN L233 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 52 DAG size of output: 1 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 21:22:04,763 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-18 21:22:04,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 213 treesize of output 160 [2022-11-18 21:22:06,252 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-18 21:22:06,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 283 treesize of output 192 [2022-11-18 21:22:07,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:22:07,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 321 treesize of output 257 [2022-11-18 21:22:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:22:08,031 INFO L328 TraceCheckSpWp]: Computing backward predicates...