./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array4_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array4_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51462516d41bb1edc1c2003475b488124e11e4eb166822052c5d908cea262957 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:44:01,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:44:01,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:44:01,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:44:01,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:44:01,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:44:01,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:44:01,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:44:01,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:44:01,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:44:01,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:44:01,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:44:01,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:44:01,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:44:01,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:44:01,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:44:01,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:44:01,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:44:01,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:44:01,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:44:01,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:44:01,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:44:01,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:44:01,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:44:01,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:44:01,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:44:01,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:44:01,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:44:01,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:44:01,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:44:01,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:44:01,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:44:01,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:44:01,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:44:01,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:44:01,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:44:01,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:44:01,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:44:01,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:44:01,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:44:01,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:44:01,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:44:01,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:44:01,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:44:01,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:44:01,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:44:01,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:44:01,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:44:01,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:44:01,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:44:01,712 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:44:01,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:44:01,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:44:01,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:44:01,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:44:01,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:44:01,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:44:01,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:44:01,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:44:01,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:44:01,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:44:01,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:44:01,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:44:01,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:44:01,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:44:01,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:44:01,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:44:01,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:44:01,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:44:01,718 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_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51462516d41bb1edc1c2003475b488124e11e4eb166822052c5d908cea262957 [2022-11-18 18:44:01,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:44:02,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:44:02,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:44:02,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:44:02,009 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:44:02,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-patterns/array4_pattern.c [2022-11-18 18:44:02,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/data/7ea313dce/3ec03f944d6b4c5d918a67e5490809b6/FLAGd6a8d93ad [2022-11-18 18:44:02,550 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:44:02,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/sv-benchmarks/c/array-patterns/array4_pattern.c [2022-11-18 18:44:02,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/data/7ea313dce/3ec03f944d6b4c5d918a67e5490809b6/FLAGd6a8d93ad [2022-11-18 18:44:02,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/data/7ea313dce/3ec03f944d6b4c5d918a67e5490809b6 [2022-11-18 18:44:02,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:44:02,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:44:02,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:02,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:44:02,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:44:02,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:02" (1/1) ... [2022-11-18 18:44:02,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c960ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:02, skipping insertion in model container [2022-11-18 18:44:02,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:02" (1/1) ... [2022-11-18 18:44:02,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:44:02,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:44:03,190 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/sv-benchmarks/c/array-patterns/array4_pattern.c[1835,1848] [2022-11-18 18:44:03,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:03,219 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:44:03,233 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/sv-benchmarks/c/array-patterns/array4_pattern.c[1835,1848] [2022-11-18 18:44:03,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:03,274 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:44:03,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03 WrapperNode [2022-11-18 18:44:03,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:03,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:03,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:44:03,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:44:03,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,327 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-18 18:44:03,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:03,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:44:03,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:44:03,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:44:03,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:44:03,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:44:03,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:44:03,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:44:03,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (1/1) ... [2022-11-18 18:44:03,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:44:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:03,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:03,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:44:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:44:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:44:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:44:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:44:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:44:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:44:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:44:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:44:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:44:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:44:03,511 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:44:03,513 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:44:03,765 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:44:03,771 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:44:03,772 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 18:44:03,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:03 BoogieIcfgContainer [2022-11-18 18:44:03,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:44:03,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:44:03,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:44:03,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:44:03,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:44:02" (1/3) ... [2022-11-18 18:44:03,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca3e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:44:03, skipping insertion in model container [2022-11-18 18:44:03,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:03" (2/3) ... [2022-11-18 18:44:03,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca3e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:44:03, skipping insertion in model container [2022-11-18 18:44:03,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:03" (3/3) ... [2022-11-18 18:44:03,787 INFO L112 eAbstractionObserver]: Analyzing ICFG array4_pattern.c [2022-11-18 18:44:03,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:44:03,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:44:03,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:44:03,933 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;@402932d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:44:03,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:44:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:44:03,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:03,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:03,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1359011546, now seen corresponding path program 1 times [2022-11-18 18:44:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:03,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255522910] [2022-11-18 18:44:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:44:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:04,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:04,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255522910] [2022-11-18 18:44:04,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255522910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:04,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:04,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:44:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178230267] [2022-11-18 18:44:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:04,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:44:04,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:44:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:44:04,246 INFO L87 Difference]: Start difference. First operand has 33 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-11-18 18:44:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:04,278 INFO L93 Difference]: Finished difference Result 63 states and 93 transitions. [2022-11-18 18:44:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:44:04,280 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 [2022-11-18 18:44:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:04,292 INFO L225 Difference]: With dead ends: 63 [2022-11-18 18:44:04,292 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 18:44:04,296 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 [2022-11-18 18:44:04,302 INFO L413 NwaCegarLoop]: 40 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, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:04,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:44:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 18:44:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 18:44:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-18 18:44:04,353 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2022-11-18 18:44:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:04,354 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-18 18:44:04,355 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) [2022-11-18 18:44:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-18 18:44:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 18:44:04,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:04,360 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:44:04,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash -852430543, now seen corresponding path program 1 times [2022-11-18 18:44:04,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:04,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564874642] [2022-11-18 18:44:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:04,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:04,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:04,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668224452] [2022-11-18 18:44:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:04,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:04,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:04,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:44:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:04,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:44:04,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:04,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:04,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:04,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564874642] [2022-11-18 18:44:04,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:04,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668224452] [2022-11-18 18:44:04,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668224452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:04,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:04,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:44:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625237542] [2022-11-18 18:44:04,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:44:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:44:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:44:04,773 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:04,965 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2022-11-18 18:44:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:44:04,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-18 18:44:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:04,969 INFO L225 Difference]: With dead ends: 70 [2022-11-18 18:44:04,969 INFO L226 Difference]: Without dead ends: 48 [2022-11-18 18:44:04,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:44:04,971 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:04,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:44:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-18 18:44:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2022-11-18 18:44:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:44:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-11-18 18:44:04,989 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 42 [2022-11-18 18:44:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:04,991 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-11-18 18:44:04,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-11-18 18:44:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 18:44:04,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:04,994 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:05,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 18:44:05,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1661777169, now seen corresponding path program 1 times [2022-11-18 18:44:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:05,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021854983] [2022-11-18 18:44:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:05,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:05,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:05,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692030531] [2022-11-18 18:44:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:05,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:05,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:05,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:05,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:44:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:05,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:05,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:05,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:05,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:05,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021854983] [2022-11-18 18:44:05,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:05,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692030531] [2022-11-18 18:44:05,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692030531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:05,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:05,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:44:05,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736172600] [2022-11-18 18:44:05,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:05,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:44:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:44:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:44:05,476 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:05,512 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-18 18:44:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:44:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-18 18:44:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:05,514 INFO L225 Difference]: With dead ends: 43 [2022-11-18 18:44:05,517 INFO L226 Difference]: Without dead ends: 39 [2022-11-18 18:44:05,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:44:05,519 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:05,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 81 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:44:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-18 18:44:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-18 18:44:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:44:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-11-18 18:44:05,537 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 42 [2022-11-18 18:44:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:05,538 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-11-18 18:44:05,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-11-18 18:44:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 18:44:05,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:05,540 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:05,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:05,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 813208561, now seen corresponding path program 1 times [2022-11-18 18:44:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214748673] [2022-11-18 18:44:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:05,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:05,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981603727] [2022-11-18 18:44:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:05,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:05,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:05,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:05,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:44:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:05,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:44:05,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:05,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:05,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:05,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214748673] [2022-11-18 18:44:05,957 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:05,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981603727] [2022-11-18 18:44:05,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981603727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:05,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:05,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:44:05,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071388954] [2022-11-18 18:44:05,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:05,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:44:05,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:44:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:44:05,960 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:06,060 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2022-11-18 18:44:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:44:06,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-11-18 18:44:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:06,061 INFO L225 Difference]: With dead ends: 77 [2022-11-18 18:44:06,062 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 18:44:06,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:44:06,063 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:06,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 102 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:44:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 18:44:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-11-18 18:44:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:44:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-11-18 18:44:06,070 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 44 [2022-11-18 18:44:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:06,071 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-11-18 18:44:06,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-11-18 18:44:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 18:44:06,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:06,072 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:06,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:06,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:06,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1843316237, now seen corresponding path program 1 times [2022-11-18 18:44:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:06,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883694350] [2022-11-18 18:44:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:06,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:06,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888728396] [2022-11-18 18:44:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:06,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:06,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:06,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:44:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:06,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 18:44:06,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:44:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:06,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-11-18 18:44:06,649 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:07,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:44:07,598 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 28 [2022-11-18 18:44:07,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:44:07,908 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:44:07,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 17 [2022-11-18 18:44:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 18:44:07,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883694350] [2022-11-18 18:44:20,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888728396] [2022-11-18 18:44:20,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888728396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:20,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:44:20,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-18 18:44:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582002012] [2022-11-18 18:44:20,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:44:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:44:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=455, Unknown=5, NotChecked=0, Total=552 [2022-11-18 18:44:20,669 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 18:44:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:21,328 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2022-11-18 18:44:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:44:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 46 [2022-11-18 18:44:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:21,332 INFO L225 Difference]: With dead ends: 91 [2022-11-18 18:44:21,332 INFO L226 Difference]: Without dead ends: 87 [2022-11-18 18:44:21,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=160, Invalid=891, Unknown=5, NotChecked=0, Total=1056 [2022-11-18 18:44:21,334 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 78 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:21,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 296 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 224 Invalid, 0 Unknown, 205 Unchecked, 0.4s Time] [2022-11-18 18:44:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-18 18:44:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2022-11-18 18:44:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 18:44:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2022-11-18 18:44:21,349 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 46 [2022-11-18 18:44:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:21,350 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2022-11-18 18:44:21,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 18:44:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2022-11-18 18:44:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 18:44:21,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:21,352 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:21,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:21,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:21,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1847143947, now seen corresponding path program 2 times [2022-11-18 18:44:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:21,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689397836] [2022-11-18 18:44:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:21,585 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:21,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811448299] [2022-11-18 18:44:21,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:44:21,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:21,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:21,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:21,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:44:21,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:44:21,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:21,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:44:21,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:21,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689397836] [2022-11-18 18:44:21,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811448299] [2022-11-18 18:44:21,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811448299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:21,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:21,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 18:44:21,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717304541] [2022-11-18 18:44:21,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:21,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:44:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:44:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:44:21,969 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:22,252 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2022-11-18 18:44:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 48 [2022-11-18 18:44:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:22,260 INFO L225 Difference]: With dead ends: 157 [2022-11-18 18:44:22,260 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 18:44:22,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:44:22,264 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 61 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:22,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 150 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:44:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 18:44:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2022-11-18 18:44:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.12) internal successors, (84), 76 states have internal predecessors, (84), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-18 18:44:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2022-11-18 18:44:22,293 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 48 [2022-11-18 18:44:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:22,293 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2022-11-18 18:44:22,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:22,294 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2022-11-18 18:44:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 18:44:22,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:22,303 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:22,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:22,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:44:22,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 741894005, now seen corresponding path program 3 times [2022-11-18 18:44:22,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:22,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156145347] [2022-11-18 18:44:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:22,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:22,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:22,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490956508] [2022-11-18 18:44:22,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:44:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:22,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:22,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:44:22,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 18:44:22,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:22,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 18:44:22,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:22,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:44:23,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:23,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 18:44:23,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 18:44:23,180 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:23,193 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-18 18:44:23,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:23,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 38 [2022-11-18 18:44:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:44:23,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:23,937 INFO L321 Elim1Store]: treesize reduction 20, result has 64.3 percent of original size [2022-11-18 18:44:23,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 111 [2022-11-18 18:44:23,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:23,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 155 [2022-11-18 18:44:24,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:24,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 156 [2022-11-18 18:44:24,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 52 [2022-11-18 18:44:24,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-18 18:44:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 18:44:24,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:24,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156145347] [2022-11-18 18:44:24,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:24,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490956508] [2022-11-18 18:44:24,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490956508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:24,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:24,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2022-11-18 18:44:24,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175258973] [2022-11-18 18:44:24,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:44:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:44:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:44:24,958 INFO L87 Difference]: Start difference. First operand 105 states and 130 transitions. Second operand has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 7 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-18 18:44:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:26,198 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2022-11-18 18:44:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:44:26,200 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 7 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 48 [2022-11-18 18:44:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:26,202 INFO L225 Difference]: With dead ends: 135 [2022-11-18 18:44:26,202 INFO L226 Difference]: Without dead ends: 131 [2022-11-18 18:44:26,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=311, Invalid=1495, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 18:44:26,203 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 84 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:26,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 154 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 283 Invalid, 0 Unknown, 36 Unchecked, 0.4s Time] [2022-11-18 18:44:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-18 18:44:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2022-11-18 18:44:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 92 states have (on average 1.108695652173913) internal successors, (102), 94 states have internal predecessors, (102), 29 states have call successors, (29), 8 states have call predecessors, (29), 8 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-18 18:44:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 160 transitions. [2022-11-18 18:44:26,242 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 160 transitions. Word has length 48 [2022-11-18 18:44:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:26,243 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 160 transitions. [2022-11-18 18:44:26,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 7 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-18 18:44:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 160 transitions. [2022-11-18 18:44:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 18:44:26,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:26,246 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:26,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:44:26,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:26,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 48801527, now seen corresponding path program 4 times [2022-11-18 18:44:26,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:26,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6430677] [2022-11-18 18:44:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:26,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:26,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:26,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762421707] [2022-11-18 18:44:26,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:44:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:26,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:26,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:44:26,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:44:26,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:26,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-18 18:44:26,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:26,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:44:26,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:26,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 18:44:26,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 18:44:26,663 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:26,670 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:26,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-11-18 18:44:28,728 INFO L321 Elim1Store]: treesize reduction 64, result has 47.1 percent of original size [2022-11-18 18:44:28,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 93 [2022-11-18 18:44:29,610 INFO L321 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2022-11-18 18:44:29,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 48 [2022-11-18 18:44:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:29,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6430677] [2022-11-18 18:44:31,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:31,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762421707] [2022-11-18 18:44:31,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762421707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:31,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:44:31,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-18 18:44:31,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350433094] [2022-11-18 18:44:31,532 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:31,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:44:31,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:31,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:44:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 18:44:31,534 INFO L87 Difference]: Start difference. First operand 130 states and 160 transitions. Second operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:32,908 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2022-11-18 18:44:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:44:32,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 50 [2022-11-18 18:44:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:32,910 INFO L225 Difference]: With dead ends: 206 [2022-11-18 18:44:32,910 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 18:44:32,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=1370, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 18:44:32,912 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 71 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:32,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 252 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 490 Invalid, 0 Unknown, 68 Unchecked, 0.9s Time] [2022-11-18 18:44:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 18:44:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2022-11-18 18:44:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 109 states have (on average 1.110091743119266) internal successors, (121), 112 states have internal predecessors, (121), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-18 18:44:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 191 transitions. [2022-11-18 18:44:32,939 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 191 transitions. Word has length 50 [2022-11-18 18:44:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:32,940 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 191 transitions. [2022-11-18 18:44:32,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 191 transitions. [2022-11-18 18:44:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 18:44:32,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:32,941 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2022-11-18 18:44:32,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:33,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash -293138951, now seen corresponding path program 5 times [2022-11-18 18:44:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980894567] [2022-11-18 18:44:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:33,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335731904] [2022-11-18 18:44:33,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:44:33,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:33,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:33,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:33,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:44:33,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 18:44:33,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:33,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:33,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:33,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:33,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980894567] [2022-11-18 18:44:33,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335731904] [2022-11-18 18:44:33,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335731904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:33,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:33,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 18:44:33,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655505844] [2022-11-18 18:44:33,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:44:33,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:33,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:44:33,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:44:33,586 INFO L87 Difference]: Start difference. First operand 154 states and 191 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:33,988 INFO L93 Difference]: Finished difference Result 336 states and 420 transitions. [2022-11-18 18:44:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:44:33,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2022-11-18 18:44:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:33,991 INFO L225 Difference]: With dead ends: 336 [2022-11-18 18:44:33,991 INFO L226 Difference]: Without dead ends: 258 [2022-11-18 18:44:33,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:44:33,992 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 197 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:33,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 200 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:44:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-18 18:44:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2022-11-18 18:44:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 151 states have (on average 1.119205298013245) internal successors, (169), 154 states have internal predecessors, (169), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 52 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-18 18:44:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 279 transitions. [2022-11-18 18:44:34,027 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 279 transitions. Word has length 52 [2022-11-18 18:44:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:34,027 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 279 transitions. [2022-11-18 18:44:34,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 279 transitions. [2022-11-18 18:44:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 18:44:34,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:34,029 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2022-11-18 18:44:34,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 18:44:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 18:44:34,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 986268537, now seen corresponding path program 6 times [2022-11-18 18:44:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:34,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460380774] [2022-11-18 18:44:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:34,265 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:34,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757931609] [2022-11-18 18:44:34,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:44:34,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:34,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:34,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:34,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:44:34,440 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-18 18:44:34,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:34,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:34,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:34,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:34,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:34,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460380774] [2022-11-18 18:44:34,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:34,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757931609] [2022-11-18 18:44:34,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757931609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:34,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:34,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 18:44:34,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950277702] [2022-11-18 18:44:34,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:34,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:44:34,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:44:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:44:34,695 INFO L87 Difference]: Start difference. First operand 218 states and 279 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:35,066 INFO L93 Difference]: Finished difference Result 243 states and 303 transitions. [2022-11-18 18:44:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:44:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2022-11-18 18:44:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:35,069 INFO L225 Difference]: With dead ends: 243 [2022-11-18 18:44:35,069 INFO L226 Difference]: Without dead ends: 239 [2022-11-18 18:44:35,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:44:35,070 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 96 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:35,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 218 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:44:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-18 18:44:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2022-11-18 18:44:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 152 states have (on average 1.118421052631579) internal successors, (170), 155 states have internal predecessors, (170), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 52 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-18 18:44:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 280 transitions. [2022-11-18 18:44:35,115 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 280 transitions. Word has length 52 [2022-11-18 18:44:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:35,116 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 280 transitions. [2022-11-18 18:44:35,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 280 transitions. [2022-11-18 18:44:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 18:44:35,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:35,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:35,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 18:44:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:35,323 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1330474501, now seen corresponding path program 7 times [2022-11-18 18:44:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:35,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535898727] [2022-11-18 18:44:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:35,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:35,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517075144] [2022-11-18 18:44:35,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:44:35,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:35,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:35,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:35,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:44:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:35,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-18 18:44:35,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:35,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:44:35,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 18:44:35,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 18:44:35,595 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:35,604 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:35,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,727 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:35,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:35,890 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:38,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:38,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:38,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:38,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:38,229 INFO L321 Elim1Store]: treesize reduction 98, result has 47.0 percent of original size [2022-11-18 18:44:38,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 129 [2022-11-18 18:44:39,766 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-18 18:44:39,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 164 treesize of output 80 [2022-11-18 18:44:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:44:39,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:41,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:41,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535898727] [2022-11-18 18:44:41,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517075144] [2022-11-18 18:44:41,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517075144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:41,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:44:41,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-18 18:44:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472559479] [2022-11-18 18:44:41,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:41,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 18:44:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 18:44:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 18:44:41,466 INFO L87 Difference]: Start difference. First operand 219 states and 280 transitions. Second operand has 31 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:45,043 INFO L93 Difference]: Finished difference Result 331 states and 420 transitions. [2022-11-18 18:44:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:44:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 54 [2022-11-18 18:44:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:45,046 INFO L225 Difference]: With dead ends: 331 [2022-11-18 18:44:45,046 INFO L226 Difference]: Without dead ends: 327 [2022-11-18 18:44:45,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=312, Invalid=2880, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 18:44:45,048 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 126 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:45,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 492 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1297 Invalid, 0 Unknown, 345 Unchecked, 2.1s Time] [2022-11-18 18:44:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-18 18:44:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 310. [2022-11-18 18:44:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 215 states have (on average 1.1209302325581396) internal successors, (241), 219 states have internal predecessors, (241), 77 states have call successors, (77), 17 states have call predecessors, (77), 17 states have return successors, (77), 73 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-18 18:44:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 395 transitions. [2022-11-18 18:44:45,094 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 395 transitions. Word has length 54 [2022-11-18 18:44:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:45,094 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 395 transitions. [2022-11-18 18:44:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 395 transitions. [2022-11-18 18:44:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 18:44:45,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:45,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:45,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:44:45,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1367492605, now seen corresponding path program 8 times [2022-11-18 18:44:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:45,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284984870] [2022-11-18 18:44:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:45,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:45,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482504265] [2022-11-18 18:44:45,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:44:45,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:45,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:45,329 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:45,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:44:45,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:44:45,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:45,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:44:45,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:45,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:45,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284984870] [2022-11-18 18:44:45,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:45,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482504265] [2022-11-18 18:44:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482504265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:45,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-18 18:44:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180329618] [2022-11-18 18:44:45,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:44:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:44:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:44:45,760 INFO L87 Difference]: Start difference. First operand 310 states and 395 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:46,475 INFO L93 Difference]: Finished difference Result 658 states and 848 transitions. [2022-11-18 18:44:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:44:46,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-11-18 18:44:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:46,479 INFO L225 Difference]: With dead ends: 658 [2022-11-18 18:44:46,480 INFO L226 Difference]: Without dead ends: 470 [2022-11-18 18:44:46,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:44:46,482 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 334 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:46,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 299 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:44:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-18 18:44:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 415. [2022-11-18 18:44:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 283 states have (on average 1.1201413427561837) internal successors, (317), 288 states have internal predecessors, (317), 111 states have call successors, (111), 20 states have call predecessors, (111), 20 states have return successors, (111), 106 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-18 18:44:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 539 transitions. [2022-11-18 18:44:46,549 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 539 transitions. Word has length 56 [2022-11-18 18:44:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:46,550 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 539 transitions. [2022-11-18 18:44:46,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 539 transitions. [2022-11-18 18:44:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 18:44:46,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:46,551 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:46,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:46,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:44:46,759 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:46,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1777525379, now seen corresponding path program 9 times [2022-11-18 18:44:46,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:46,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768991989] [2022-11-18 18:44:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:46,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:46,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055420107] [2022-11-18 18:44:46,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:44:46,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:46,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:46,783 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:46,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:44:46,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 18:44:46,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:46,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:44:46,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:44:47,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:44:47,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:47,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768991989] [2022-11-18 18:44:47,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:47,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055420107] [2022-11-18 18:44:47,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055420107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:47,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:47,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-18 18:44:47,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141626227] [2022-11-18 18:44:47,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:44:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:44:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:44:47,279 INFO L87 Difference]: Start difference. First operand 415 states and 539 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:47,832 INFO L93 Difference]: Finished difference Result 450 states and 571 transitions. [2022-11-18 18:44:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:44:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-11-18 18:44:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:47,835 INFO L225 Difference]: With dead ends: 450 [2022-11-18 18:44:47,835 INFO L226 Difference]: Without dead ends: 446 [2022-11-18 18:44:47,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:44:47,837 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 128 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 372 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:44:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-18 18:44:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 417. [2022-11-18 18:44:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 285 states have (on average 1.119298245614035) internal successors, (319), 290 states have internal predecessors, (319), 111 states have call successors, (111), 20 states have call predecessors, (111), 20 states have return successors, (111), 106 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-18 18:44:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 541 transitions. [2022-11-18 18:44:47,911 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 541 transitions. Word has length 56 [2022-11-18 18:44:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:47,912 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 541 transitions. [2022-11-18 18:44:47,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:44:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 541 transitions. [2022-11-18 18:44:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 18:44:47,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:47,914 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:47,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:48,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:44:48,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1248328447, now seen corresponding path program 10 times [2022-11-18 18:44:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:48,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52749663] [2022-11-18 18:44:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:48,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:48,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:48,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809900775] [2022-11-18 18:44:48,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:44:48,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:48,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:48,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d392d586-5f4b-417e-b047-f4072e1357bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:44:48,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:44:48,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:48,458 WARN L261 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-18 18:44:48,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:48,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:44:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:48,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 18:44:48,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 18:44:48,519 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:48,530 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:48,633 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 18:44:48,769 INFO L350 Elim1Store]: Elim1 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 88 treesize of output 83 [2022-11-18 18:44:48,960 INFO L350 Elim1Store]: Elim1 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 112 treesize of output 113 [2022-11-18 18:44:52,550 INFO L321 Elim1Store]: treesize reduction 186, result has 47.9 percent of original size [2022-11-18 18:44:52,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 134 treesize of output 219 [2022-11-18 18:45:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:12,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:12,363 INFO L190 IndexEqualityManager]: detected not equals via solver