./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array8_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array8_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc --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 06625eaf591a62e295090a882d83c1e11aaafca7ac8895e7d4adcf51d5b26e02 --- 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-5e519f3 [2022-11-02 20:57:20,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:57:20,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:57:20,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:57:20,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:57:20,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:57:20,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:57:20,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:57:20,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:57:20,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:57:20,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:57:20,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:57:20,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:57:20,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:57:20,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:57:20,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:57:20,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:57:20,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:57:20,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:57:20,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:57:20,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:57:20,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:57:20,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:57:20,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:57:20,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:57:20,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:57:20,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:57:20,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:57:20,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:57:20,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:57:20,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:57:20,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:57:20,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:57:20,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:57:20,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:57:20,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:57:20,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:57:20,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:57:20,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:57:20,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:57:20,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:57:20,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:57:20,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:57:20,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:57:20,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:57:20,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:57:20,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:57:20,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:57:20,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:57:20,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:57:20,374 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:57:20,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:57:20,374 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:57:20,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:57:20,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:57:20,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:57:20,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:57:20,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:57:20,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:57:20,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:57:20,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:57:20,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:57:20,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:57:20,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:57:20,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:57:20,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:57:20,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:20,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:57:20,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:57:20,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:57:20,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:57:20,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:57:20,379 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:57:20,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:57:20,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:57:20,379 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_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06625eaf591a62e295090a882d83c1e11aaafca7ac8895e7d4adcf51d5b26e02 [2022-11-02 20:57:20,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:57:20,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:57:20,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:57:20,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:57:20,685 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:57:20,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-patterns/array8_pattern.c [2022-11-02 20:57:20,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/data/7b16162d4/5de949d0f9a04464bfdf192918f6e87c/FLAG5cd389caa [2022-11-02 20:57:21,291 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:57:21,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/sv-benchmarks/c/array-patterns/array8_pattern.c [2022-11-02 20:57:21,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/data/7b16162d4/5de949d0f9a04464bfdf192918f6e87c/FLAG5cd389caa [2022-11-02 20:57:21,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/data/7b16162d4/5de949d0f9a04464bfdf192918f6e87c [2022-11-02 20:57:21,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:57:21,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:57:21,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:21,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:57:21,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:57:21,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:21,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c22aab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21, skipping insertion in model container [2022-11-02 20:57:21,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:21,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:57:21,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:57:21,888 WARN L230 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_b9324e6b-e2ca-4239-82fa-76efd1382f8e/sv-benchmarks/c/array-patterns/array8_pattern.c[1321,1334] [2022-11-02 20:57:21,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:21,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:57:21,932 WARN L230 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_b9324e6b-e2ca-4239-82fa-76efd1382f8e/sv-benchmarks/c/array-patterns/array8_pattern.c[1321,1334] [2022-11-02 20:57:21,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:21,981 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:57:21,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21 WrapperNode [2022-11-02 20:57:21,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:21,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:21,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:57:21,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:57:21,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:21,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,023 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-02 20:57:22,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:22,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:57:22,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:57:22,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:57:22,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,047 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:57:22,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:57:22,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:57:22,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:57:22,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (1/1) ... [2022-11-02 20:57:22,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:22,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:22,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:22,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:57:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:57:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:57:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:57:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:57:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:57:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:57:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:57:22,232 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:57:22,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:57:22,427 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:57:22,434 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:57:22,434 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:57:22,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:22 BoogieIcfgContainer [2022-11-02 20:57:22,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:57:22,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:57:22,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:57:22,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:57:22,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:57:21" (1/3) ... [2022-11-02 20:57:22,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f03101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:22, skipping insertion in model container [2022-11-02 20:57:22,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:21" (2/3) ... [2022-11-02 20:57:22,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f03101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:22, skipping insertion in model container [2022-11-02 20:57:22,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:22" (3/3) ... [2022-11-02 20:57:22,445 INFO L112 eAbstractionObserver]: Analyzing ICFG array8_pattern.c [2022-11-02 20:57:22,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:57:22,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:57:22,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:22,585 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;@204a30df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:22,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:57:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:57:22,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:22,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:22,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1127586545, now seen corresponding path program 1 times [2022-11-02 20:57:22,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:22,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261945038] [2022-11-02 20:57:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:22,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:57:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:22,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261945038] [2022-11-02 20:57:22,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261945038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:22,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:22,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791050365] [2022-11-02 20:57:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:22,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:57:22,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:57:22,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:22,848 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:57:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:22,870 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-11-02 20:57:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:57:22,874 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-02 20:57:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:22,882 INFO L225 Difference]: With dead ends: 53 [2022-11-02 20:57:22,883 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 20:57:22,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:22,909 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2022-11-02 20:57:22,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:57:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 20:57:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-02 20:57:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 20:57:22,961 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-11-02 20:57:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:22,962 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 20:57:22,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:57:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 20:57:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:57:22,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:22,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:57:22,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:22,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1008571545, now seen corresponding path program 1 times [2022-11-02 20:57:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339645877] [2022-11-02 20:57:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:23,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:23,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626276831] [2022-11-02 20:57:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:23,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:23,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:23,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:57:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:23,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:57:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:23,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:23,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339645877] [2022-11-02 20:57:23,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:23,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626276831] [2022-11-02 20:57:23,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626276831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:23,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:23,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:57:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414252462] [2022-11-02 20:57:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:23,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:57:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:57:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:23,320 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:23,475 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-02 20:57:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:57:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-02 20:57:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:23,477 INFO L225 Difference]: With dead ends: 50 [2022-11-02 20:57:23,478 INFO L226 Difference]: Without dead ends: 32 [2022-11-02 20:57:23,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:23,481 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:23,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:57:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-02 20:57:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-11-02 20:57:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-02 20:57:23,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-11-02 20:57:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:23,496 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-02 20:57:23,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-02 20:57:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 20:57:23,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:23,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:23,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:23,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:23,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1890411897, now seen corresponding path program 1 times [2022-11-02 20:57:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:23,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184361432] [2022-11-02 20:57:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:23,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:23,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648534141] [2022-11-02 20:57:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:23,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:23,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:23,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:57:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:23,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 20:57:23,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:23,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:24,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 18 [2022-11-02 20:57:24,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:57:24,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:24,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:24,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-02 20:57:25,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:25,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2022-11-02 20:57:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:25,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184361432] [2022-11-02 20:57:25,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648534141] [2022-11-02 20:57:25,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648534141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:25,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:25,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-02 20:57:25,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123264481] [2022-11-02 20:57:25,793 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:25,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:57:25,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:57:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:57:25,795 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:26,190 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2022-11-02 20:57:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:57:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-02 20:57:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:26,193 INFO L225 Difference]: With dead ends: 70 [2022-11-02 20:57:26,193 INFO L226 Difference]: Without dead ends: 50 [2022-11-02 20:57:26,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:57:26,195 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:26,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 148 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-11-02 20:57:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-02 20:57:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-11-02 20:57:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:57:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-11-02 20:57:26,206 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29 [2022-11-02 20:57:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:26,207 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-11-02 20:57:26,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:26,207 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-11-02 20:57:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:57:26,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:26,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:26,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:26,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -32099493, now seen corresponding path program 2 times [2022-11-02 20:57:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:26,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332204136] [2022-11-02 20:57:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:26,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:26,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440599874] [2022-11-02 20:57:26,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:57:26,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:26,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:26,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:57:26,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:57:26,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:26,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:57:26,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:26,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:57:26,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:26,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332204136] [2022-11-02 20:57:26,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:26,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440599874] [2022-11-02 20:57:26,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440599874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:26,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:57:26,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:57:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746466490] [2022-11-02 20:57:26,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:26,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:57:26,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:57:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:26,689 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:57:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:26,823 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-11-02 20:57:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:57:26,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-02 20:57:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:26,829 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:57:26,829 INFO L226 Difference]: Without dead ends: 40 [2022-11-02 20:57:26,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:57:26,833 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:26,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 110 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:57:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-02 20:57:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-11-02 20:57:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-02 20:57:26,853 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-11-02 20:57:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:26,853 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-02 20:57:26,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:57:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-02 20:57:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:57:26,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:26,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:26,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:27,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:27,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1857874167, now seen corresponding path program 3 times [2022-11-02 20:57:27,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:27,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753900459] [2022-11-02 20:57:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:27,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025923356] [2022-11-02 20:57:27,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:57:27,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:27,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:27,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:57:27,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:57:27,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:27,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:57:27,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:27,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:57:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:27,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753900459] [2022-11-02 20:57:27,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:27,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025923356] [2022-11-02 20:57:27,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025923356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:27,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:57:27,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:57:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412817847] [2022-11-02 20:57:27,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:57:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:57:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:27,378 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:57:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:27,507 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-02 20:57:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:57:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-02 20:57:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:27,509 INFO L225 Difference]: With dead ends: 39 [2022-11-02 20:57:27,509 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 20:57:27,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:57:27,512 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:27,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 91 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:57:27,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 20:57:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-11-02 20:57:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-02 20:57:27,524 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31 [2022-11-02 20:57:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:27,524 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-02 20:57:27,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:57:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-02 20:57:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:57:27,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:27,528 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:27,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:27,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:27,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1236086951, now seen corresponding path program 4 times [2022-11-02 20:57:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:27,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215383156] [2022-11-02 20:57:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:27,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:27,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840579334] [2022-11-02 20:57:27,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:57:27,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:27,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:27,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:27,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:57:27,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:57:27,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:27,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 20:57:27,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:27,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:27,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:27,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 18 [2022-11-02 20:57:27,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:57:28,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-02 20:57:29,950 INFO L356 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-02 20:57:29,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 52 treesize of output 67 [2022-11-02 20:57:32,322 INFO L356 Elim1Store]: treesize reduction 86, result has 45.9 percent of original size [2022-11-02 20:57:32,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 124 treesize of output 167 [2022-11-02 20:57:37,767 INFO L356 Elim1Store]: treesize reduction 156, result has 73.0 percent of original size [2022-11-02 20:57:37,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 2 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 47 case distinctions, treesize of input 226 treesize of output 540 [2022-11-02 20:58:31,477 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-02 20:58:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:33,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:44,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215383156] [2022-11-02 20:58:44,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840579334] [2022-11-02 20:58:44,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840579334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:44,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:44,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-02 20:58:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821571107] [2022-11-02 20:58:44,447 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:58:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:58:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=951, Unknown=8, NotChecked=0, Total=1122 [2022-11-02 20:58:44,449 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:58:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:46,737 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-11-02 20:58:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:58:46,738 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-02 20:58:46,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:46,739 INFO L225 Difference]: With dead ends: 57 [2022-11-02 20:58:46,739 INFO L226 Difference]: Without dead ends: 53 [2022-11-02 20:58:46,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=220, Invalid=1253, Unknown=9, NotChecked=0, Total=1482 [2022-11-02 20:58:46,740 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:46,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 224 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-11-02 20:58:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-02 20:58:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2022-11-02 20:58:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:58:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-02 20:58:46,752 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 33 [2022-11-02 20:58:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:46,752 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-02 20:58:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:58:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-02 20:58:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:58:46,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:46,754 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:46,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:46,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:46,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:46,975 INFO L85 PathProgramCache]: Analyzing trace with hash -977921513, now seen corresponding path program 1 times [2022-11-02 20:58:46,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:46,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834912109] [2022-11-02 20:58:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:46,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:47,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:47,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471928142] [2022-11-02 20:58:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:47,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:47,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:58:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:47,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 20:58:47,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:47,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:58:47,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 20:58:47,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 28 [2022-11-02 20:58:47,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:58:47,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:58:47,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2022-11-02 20:58:47,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,870 INFO L356 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-02 20:58:47,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 68 [2022-11-02 20:58:49,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:49,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:49,632 INFO L356 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-11-02 20:58:49,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 96 [2022-11-02 20:58:50,595 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:50,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 126 treesize of output 122 [2022-11-02 20:58:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:50,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:52,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834912109] [2022-11-02 20:58:52,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:52,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471928142] [2022-11-02 20:58:52,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471928142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:52,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:52,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-02 20:58:52,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796697910] [2022-11-02 20:58:52,535 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:58:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:58:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=630, Unknown=2, NotChecked=0, Total=756 [2022-11-02 20:58:52,537 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:58:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:53,742 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2022-11-02 20:58:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:58:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-02 20:58:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:53,744 INFO L225 Difference]: With dead ends: 70 [2022-11-02 20:58:53,744 INFO L226 Difference]: Without dead ends: 66 [2022-11-02 20:58:53,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=158, Invalid=831, Unknown=3, NotChecked=0, Total=992 [2022-11-02 20:58:53,746 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:53,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 211 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 0 Unknown, 115 Unchecked, 0.3s Time] [2022-11-02 20:58:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-02 20:58:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2022-11-02 20:58:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:58:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-02 20:58:53,760 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 33 [2022-11-02 20:58:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:53,760 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-02 20:58:53,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:58:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-02 20:58:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:58:53,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:53,762 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:53,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:53,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:53,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1879614779, now seen corresponding path program 5 times [2022-11-02 20:58:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619967315] [2022-11-02 20:58:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:53,987 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:53,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787640453] [2022-11-02 20:58:53,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:58:53,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:53,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:53,989 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:53,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:58:54,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:58:54,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:54,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:58:54,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:54,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:58:54,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:54,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619967315] [2022-11-02 20:58:54,235 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:54,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787640453] [2022-11-02 20:58:54,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787640453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:54,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:54,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-02 20:58:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731062705] [2022-11-02 20:58:54,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:58:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:58:54,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:54,237 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:58:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:54,448 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2022-11-02 20:58:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:58:54,449 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-02 20:58:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:54,450 INFO L225 Difference]: With dead ends: 103 [2022-11-02 20:58:54,451 INFO L226 Difference]: Without dead ends: 91 [2022-11-02 20:58:54,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:58:54,452 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:54,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 127 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:58:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-02 20:58:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2022-11-02 20:58:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 65 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:58:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-02 20:58:54,473 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 35 [2022-11-02 20:58:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:54,473 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-02 20:58:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:58:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-02 20:58:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:58:54,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:54,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:54,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:54,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:54,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1081807417, now seen corresponding path program 6 times [2022-11-02 20:58:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:54,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36488254] [2022-11-02 20:58:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:54,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:54,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966334349] [2022-11-02 20:58:54,725 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:58:54,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:54,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:54,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:58:54,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-02 20:58:54,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:54,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-02 20:58:54,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:54,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:58:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 20:58:55,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 28 [2022-11-02 20:58:55,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:58:55,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:58:55,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-11-02 20:58:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2022-11-02 20:58:55,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:55,849 INFO L356 Elim1Store]: treesize reduction 46, result has 48.9 percent of original size [2022-11-02 20:58:55,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-11-02 20:58:56,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:56,202 INFO L356 Elim1Store]: treesize reduction 124, result has 17.3 percent of original size [2022-11-02 20:58:56,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 112 [2022-11-02 20:58:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:57,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 49 [2022-11-02 20:58:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:57,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:02,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:02,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36488254] [2022-11-02 20:59:02,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:02,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966334349] [2022-11-02 20:59:02,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966334349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:02,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:02,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-02 20:59:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789886141] [2022-11-02 20:59:02,498 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:02,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:59:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:59:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=894, Unknown=1, NotChecked=0, Total=1056 [2022-11-02 20:59:02,499 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:59:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:04,619 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2022-11-02 20:59:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:59:04,619 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-02 20:59:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:04,625 INFO L225 Difference]: With dead ends: 100 [2022-11-02 20:59:04,625 INFO L226 Difference]: Without dead ends: 96 [2022-11-02 20:59:04,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=319, Invalid=1572, Unknown=1, NotChecked=0, Total=1892 [2022-11-02 20:59:04,626 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 43 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:04,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 324 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 492 Invalid, 0 Unknown, 34 Unchecked, 0.8s Time] [2022-11-02 20:59:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-02 20:59:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2022-11-02 20:59:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:59:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2022-11-02 20:59:04,651 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 37 [2022-11-02 20:59:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:04,651 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2022-11-02 20:59:04,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:59:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2022-11-02 20:59:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:59:04,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:04,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:04,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:59:04,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash 70690167, now seen corresponding path program 2 times [2022-11-02 20:59:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:04,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028363260] [2022-11-02 20:59:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:04,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:04,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239406493] [2022-11-02 20:59:04,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:04,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:04,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:04,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:04,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:59:05,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:05,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:05,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-02 20:59:05,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:05,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:59:05,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 20:59:05,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:59:05,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 26 [2022-11-02 20:59:05,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-02 20:59:05,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:05,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2022-11-02 20:59:10,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:59:10,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:59:10,683 INFO L356 Elim1Store]: treesize reduction 330, result has 31.8 percent of original size [2022-11-02 20:59:10,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 116 treesize of output 228 [2022-11-02 20:59:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:13,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:13,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:13,705 INFO L356 Elim1Store]: treesize reduction 114, result has 39.0 percent of original size [2022-11-02 20:59:13,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 127 treesize of output 185 [2022-11-02 20:59:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:15,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:15,813 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:59:15,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 4 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 161 treesize of output 261 [2022-11-02 20:59:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:18,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:20,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028363260] [2022-11-02 20:59:20,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239406493] [2022-11-02 20:59:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239406493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:20,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:20,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-02 20:59:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102694682] [2022-11-02 20:59:20,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:59:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:59:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1204, Unknown=3, NotChecked=0, Total=1406 [2022-11-02 20:59:20,968 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:59:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:22,536 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2022-11-02 20:59:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:59:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-02 20:59:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:22,537 INFO L225 Difference]: With dead ends: 109 [2022-11-02 20:59:22,538 INFO L226 Difference]: Without dead ends: 105 [2022-11-02 20:59:22,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=217, Invalid=1339, Unknown=4, NotChecked=0, Total=1560 [2022-11-02 20:59:22,539 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:22,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 278 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2022-11-02 20:59:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-02 20:59:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2022-11-02 20:59:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:59:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2022-11-02 20:59:22,566 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 37 [2022-11-02 20:59:22,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:22,566 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2022-11-02 20:59:22,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:59:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2022-11-02 20:59:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:59:22,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:22,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:22,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:22,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:59:22,787 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash 288075803, now seen corresponding path program 7 times [2022-11-02 20:59:22,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:22,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961967829] [2022-11-02 20:59:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:22,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:22,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714273174] [2022-11-02 20:59:22,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:59:22,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:22,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:22,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:22,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:59:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:22,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:59:22,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:23,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:59:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:23,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961967829] [2022-11-02 20:59:23,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:23,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714273174] [2022-11-02 20:59:23,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714273174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:23,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:59:23,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-02 20:59:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004395146] [2022-11-02 20:59:23,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:59:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:59:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:59:23,131 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:23,520 INFO L93 Difference]: Finished difference Result 156 states and 171 transitions. [2022-11-02 20:59:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:59:23,522 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-02 20:59:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:23,522 INFO L225 Difference]: With dead ends: 156 [2022-11-02 20:59:23,523 INFO L226 Difference]: Without dead ends: 142 [2022-11-02 20:59:23,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:59:23,524 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 157 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:23,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 142 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:59:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-02 20:59:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2022-11-02 20:59:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 1.168421052631579) internal successors, (111), 95 states have internal predecessors, (111), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:59:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2022-11-02 20:59:23,558 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 39 [2022-11-02 20:59:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:23,559 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2022-11-02 20:59:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2022-11-02 20:59:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:59:23,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:23,560 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:23,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:59:23,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2118006027, now seen corresponding path program 3 times [2022-11-02 20:59:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:23,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318233431] [2022-11-02 20:59:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:23,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:23,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756305933] [2022-11-02 20:59:23,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:59:23,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:23,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:23,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:59:24,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:59:24,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:24,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:59:24,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:24,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:59:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:24,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318233431] [2022-11-02 20:59:24,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:24,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756305933] [2022-11-02 20:59:24,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756305933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:24,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:59:24,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-02 20:59:24,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289620329] [2022-11-02 20:59:24,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:24,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:59:24,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:59:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:59:24,269 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:24,616 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2022-11-02 20:59:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:59:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-02 20:59:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:24,618 INFO L225 Difference]: With dead ends: 137 [2022-11-02 20:59:24,618 INFO L226 Difference]: Without dead ends: 133 [2022-11-02 20:59:24,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:59:24,619 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 70 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:24,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 154 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:59:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-02 20:59:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2022-11-02 20:59:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:59:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2022-11-02 20:59:24,645 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 39 [2022-11-02 20:59:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:24,645 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2022-11-02 20:59:24,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2022-11-02 20:59:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:59:24,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:24,647 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:24,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-02 20:59:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:24,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1485008409, now seen corresponding path program 8 times [2022-11-02 20:59:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:24,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272133889] [2022-11-02 20:59:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:24,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444430233] [2022-11-02 20:59:24,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:24,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:24,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:24,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:24,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:59:25,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:25,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:25,019 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 20:59:25,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:25,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:59:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 20:59:25,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 28 [2022-11-02 20:59:25,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:59:25,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:59:25,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-02 20:59:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2022-11-02 20:59:25,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:25,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 103 [2022-11-02 20:59:26,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:26,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:26,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:26,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:26,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:26,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:26,775 INFO L356 Elim1Store]: treesize reduction 62, result has 48.8 percent of original size [2022-11-02 20:59:26,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 128 [2022-11-02 20:59:29,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:29,555 INFO L356 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2022-11-02 20:59:29,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 130 [2022-11-02 20:59:38,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 45 [2022-11-02 20:59:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:38,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:47,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:47,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272133889] [2022-11-02 20:59:47,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:47,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444430233] [2022-11-02 20:59:47,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444430233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:47,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:47,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-02 20:59:47,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417753452] [2022-11-02 20:59:47,566 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:47,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:59:47,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:59:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1504, Unknown=13, NotChecked=0, Total=1722 [2022-11-02 20:59:47,568 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:59:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:51,888 INFO L93 Difference]: Finished difference Result 136 states and 155 transitions. [2022-11-02 20:59:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:59:51,889 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-02 20:59:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:51,890 INFO L225 Difference]: With dead ends: 136 [2022-11-02 20:59:51,890 INFO L226 Difference]: Without dead ends: 132 [2022-11-02 20:59:51,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=277, Invalid=1964, Unknown=15, NotChecked=0, Total=2256 [2022-11-02 20:59:51,892 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 35 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:51,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 356 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 679 Invalid, 0 Unknown, 138 Unchecked, 1.2s Time] [2022-11-02 20:59:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-02 20:59:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2022-11-02 20:59:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 97 states have internal predecessors, (113), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:59:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2022-11-02 20:59:51,926 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 41 [2022-11-02 20:59:51,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:51,926 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2022-11-02 20:59:51,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:59:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2022-11-02 20:59:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:59:51,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:51,928 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:51,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:52,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:52,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 463940055, now seen corresponding path program 4 times [2022-11-02 20:59:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:52,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947855164] [2022-11-02 20:59:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:52,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:52,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582228644] [2022-11-02 20:59:52,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:59:52,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:52,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:52,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:52,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9324e6b-e2ca-4239-82fa-76efd1382f8e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:59:52,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:59:52,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:52,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-02 20:59:52,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:52,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:59:52,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 20:59:52,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-02 20:59:52,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 26 [2022-11-02 20:59:52,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-02 20:59:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2022-11-02 20:59:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 95 [2022-11-02 20:59:53,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:53,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:54,068 INFO L356 Elim1Store]: treesize reduction 70, result has 48.9 percent of original size [2022-11-02 20:59:54,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 140 [2022-11-02 20:59:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:54,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:55,293 INFO L356 Elim1Store]: treesize reduction 498, result has 27.6 percent of original size [2022-11-02 20:59:55,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 5 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 43 case distinctions, treesize of input 236 treesize of output 385 [2022-11-02 21:01:07,482 WARN L234 SmtUtils]: Spent 55.01s on a formula simplification. DAG size of input: 370 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:01:11,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:11,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:11,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:11,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:13,286 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:13,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 7 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 78 case distinctions, treesize of input 314 treesize of output 1202