./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0 --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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:39:24,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:39:24,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:39:24,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:39:24,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:39:24,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:39:24,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:39:24,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:39:24,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:39:24,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:39:24,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:39:24,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:39:24,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:39:24,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:39:24,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:39:24,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:39:24,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:39:24,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:39:24,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:39:24,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:39:24,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:39:24,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:39:24,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:39:24,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:39:24,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:39:24,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:39:24,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:39:24,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:39:24,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:39:24,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:39:24,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:39:24,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:39:24,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:39:24,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:39:24,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:39:24,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:39:24,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:39:24,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:39:24,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:39:24,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:39:24,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:39:24,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:39:24,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:39:24,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:39:24,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:39:24,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:39:24,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:39:24,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:39:24,871 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:39:24,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:39:24,872 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:39:24,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:39:24,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:39:24,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:39:24,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:39:24,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:39:24,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:39:24,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:39:24,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:39:24,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:39:24,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:39:24,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:39:24,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:39:24,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:39:24,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:39:24,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:39:24,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:39:24,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:39:24,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:39:24,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:39:24,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:39:24,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:39:24,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:39:24,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:39:24,880 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_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2021-11-22 15:39:25,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:39:25,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:39:25,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:39:25,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:39:25,165 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:39:25,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2021-11-22 15:39:25,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/data/44b935962/dae4bb3f11284ce7a6f6aad3f10929c9/FLAGd354c91fe [2021-11-22 15:39:25,638 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:39:25,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/sv-benchmarks/c/array-patterns/array23_pattern.c [2021-11-22 15:39:25,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/data/44b935962/dae4bb3f11284ce7a6f6aad3f10929c9/FLAGd354c91fe [2021-11-22 15:39:26,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/data/44b935962/dae4bb3f11284ce7a6f6aad3f10929c9 [2021-11-22 15:39:26,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:39:26,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:39:26,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:39:26,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:39:26,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:39:26,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d79b675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26, skipping insertion in model container [2021-11-22 15:39:26,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:39:26,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:39:26,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-11-22 15:39:26,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:39:26,268 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:39:26,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-11-22 15:39:26,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:39:26,305 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:39:26,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26 WrapperNode [2021-11-22 15:39:26,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:39:26,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:39:26,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:39:26,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:39:26,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,346 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2021-11-22 15:39:26,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:39:26,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:39:26,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:39:26,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:39:26,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:39:26,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:39:26,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:39:26,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:39:26,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (1/1) ... [2021-11-22 15:39:26,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:39:26,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:26,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:39:26,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:39:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:39:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:39:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:39:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:39:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:39:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:39:26,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:39:26,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:39:26,504 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:39:26,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:39:26,745 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:39:26,753 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:39:26,753 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-22 15:39:26,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:39:26 BoogieIcfgContainer [2021-11-22 15:39:26,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:39:26,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:39:26,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:39:26,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:39:26,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:39:26" (1/3) ... [2021-11-22 15:39:26,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7780d0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:39:26, skipping insertion in model container [2021-11-22 15:39:26,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:39:26" (2/3) ... [2021-11-22 15:39:26,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7780d0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:39:26, skipping insertion in model container [2021-11-22 15:39:26,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:39:26" (3/3) ... [2021-11-22 15:39:26,785 INFO L111 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2021-11-22 15:39:26,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:39:26,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:39:26,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:39:26,843 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:39:26,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:39:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:39:26,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:26,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:39:26,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1748886715, now seen corresponding path program 1 times [2021-11-22 15:39:26,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453886717] [2021-11-22 15:39:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:26,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:39:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:39:27,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:27,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453886717] [2021-11-22 15:39:27,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453886717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:39:27,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:39:27,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:39:27,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140516056] [2021-11-22 15:39:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:39:27,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:39:27,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:39:27,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:39:27,053 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:27,070 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2021-11-22 15:39:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:39:27,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:39:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:27,080 INFO L225 Difference]: With dead ends: 67 [2021-11-22 15:39:27,080 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 15:39:27,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:39:27,087 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2021-11-22 15:39:27,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:39:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 15:39:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-22 15:39:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-11-22 15:39:27,120 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 11 [2021-11-22 15:39:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:27,120 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-11-22 15:39:27,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-11-22 15:39:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:39:27,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:27,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:39:27,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:39:27,123 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1811974448, now seen corresponding path program 1 times [2021-11-22 15:39:27,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:27,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267785380] [2021-11-22 15:39:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:27,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:27,141 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:39:27,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395170084] [2021-11-22 15:39:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:27,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:27,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:39:27,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:39:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:39:27,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:39:27,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:39:27,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:39:27,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:27,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267785380] [2021-11-22 15:39:27,415 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:39:27,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395170084] [2021-11-22 15:39:27,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395170084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:39:27,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:39:27,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:39:27,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082771757] [2021-11-22 15:39:27,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:39:27,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:39:27,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:27,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:39:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:39:27,419 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:27,443 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-11-22 15:39:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:39:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:39:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:27,445 INFO L225 Difference]: With dead ends: 38 [2021-11-22 15:39:27,445 INFO L226 Difference]: Without dead ends: 34 [2021-11-22 15:39:27,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:39:27,447 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 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 [2021-11-22 15:39:27,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:39:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-22 15:39:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-22 15:39:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2021-11-22 15:39:27,455 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 24 [2021-11-22 15:39:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:27,456 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2021-11-22 15:39:27,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-11-22 15:39:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:39:27,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:27,457 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:39:27,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:39:27,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:27,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash -349224597, now seen corresponding path program 1 times [2021-11-22 15:39:27,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:27,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361006298] [2021-11-22 15:39:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:27,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:27,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:39:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767108667] [2021-11-22 15:39:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:27,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:27,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:39:27,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:39:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:39:27,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:39:27,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:39:27,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:39:27,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:27,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361006298] [2021-11-22 15:39:27,867 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:39:27,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767108667] [2021-11-22 15:39:27,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767108667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:39:27,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:39:27,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:39:27,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124742459] [2021-11-22 15:39:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:39:27,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:39:27,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:39:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:39:27,870 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:27,995 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2021-11-22 15:39:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:39:27,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-22 15:39:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:27,997 INFO L225 Difference]: With dead ends: 71 [2021-11-22 15:39:27,997 INFO L226 Difference]: Without dead ends: 44 [2021-11-22 15:39:27,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:39:28,000 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:39:28,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 81 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:39:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-22 15:39:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2021-11-22 15:39:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-11-22 15:39:28,007 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 29 [2021-11-22 15:39:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:28,008 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-11-22 15:39:28,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-11-22 15:39:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 15:39:28,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:28,010 INFO L514 BasicCegarLoop]: trace histogram [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, 1] [2021-11-22 15:39:28,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:39:28,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:28,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash -458146948, now seen corresponding path program 1 times [2021-11-22 15:39:28,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:28,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649987673] [2021-11-22 15:39:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:28,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:28,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:39:28,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236009159] [2021-11-22 15:39:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:28,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:28,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:39:28,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:39:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:39:28,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:39:28,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:39:28,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:39:28,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:28,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649987673] [2021-11-22 15:39:28,430 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:39:28,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236009159] [2021-11-22 15:39:28,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236009159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:39:28,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:39:28,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:39:28,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105952026] [2021-11-22 15:39:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:39:28,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:39:28,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:39:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:39:28,433 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:28,500 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-11-22 15:39:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:39:28,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-22 15:39:28,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:28,502 INFO L225 Difference]: With dead ends: 68 [2021-11-22 15:39:28,502 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 15:39:28,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:39:28,504 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:39:28,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:39:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 15:39:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-11-22 15:39:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-11-22 15:39:28,511 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 32 [2021-11-22 15:39:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:28,511 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-11-22 15:39:28,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-11-22 15:39:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:39:28,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:28,513 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-11-22 15:39:28,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:39:28,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:28,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 418919962, now seen corresponding path program 1 times [2021-11-22 15:39:28,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:28,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453891384] [2021-11-22 15:39:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:28,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:28,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:39:28,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678410164] [2021-11-22 15:39:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:28,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:28,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:28,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:39:28,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:39:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:39:28,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:39:28,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:39:29,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:39:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:39:29,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453891384] [2021-11-22 15:39:29,122 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:39:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678410164] [2021-11-22 15:39:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678410164] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:39:29,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:39:29,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-22 15:39:29,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271309694] [2021-11-22 15:39:29,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:39:29,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:39:29,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:39:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:39:29,127 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:29,337 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2021-11-22 15:39:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:39:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:39:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:29,339 INFO L225 Difference]: With dead ends: 72 [2021-11-22 15:39:29,339 INFO L226 Difference]: Without dead ends: 42 [2021-11-22 15:39:29,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:39:29,341 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:39:29,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 74 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:39:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-22 15:39:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-11-22 15:39:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-11-22 15:39:29,348 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 34 [2021-11-22 15:39:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:29,349 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-11-22 15:39:29,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-11-22 15:39:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 15:39:29,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:29,351 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-11-22 15:39:29,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:39:29,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:29,575 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash 842854106, now seen corresponding path program 2 times [2021-11-22 15:39:29,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:29,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397428358] [2021-11-22 15:39:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:29,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:29,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:39:29,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380788000] [2021-11-22 15:39:29,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:39:29,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:29,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:29,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:39:29,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:39:29,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:39:29,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:39:29,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:39:29,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:39:29,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:39:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:39:29,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397428358] [2021-11-22 15:39:29,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:39:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380788000] [2021-11-22 15:39:29,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380788000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:39:29,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:39:29,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-22 15:39:29,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862891923] [2021-11-22 15:39:29,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:39:29,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:39:29,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:39:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:39:29,960 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:30,138 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2021-11-22 15:39:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:39:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-22 15:39:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:30,139 INFO L225 Difference]: With dead ends: 93 [2021-11-22 15:39:30,140 INFO L226 Difference]: Without dead ends: 66 [2021-11-22 15:39:30,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:39:30,141 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 121 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:39:30,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 47 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:39:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-22 15:39:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-11-22 15:39:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-11-22 15:39:30,150 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 38 [2021-11-22 15:39:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:30,151 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-11-22 15:39:30,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-11-22 15:39:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 15:39:30,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:30,153 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:39:30,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:39:30,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 15:39:30,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:30,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1588184272, now seen corresponding path program 3 times [2021-11-22 15:39:30,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:30,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126279570] [2021-11-22 15:39:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:30,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:30,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:39:30,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332690779] [2021-11-22 15:39:30,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:39:30,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:39:30,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:39:30,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:39:30,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cda6ad-9ac8-45df-a866-64dad0c86d14/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:39:32,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-22 15:39:32,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:39:32,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-22 15:39:32,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:32,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:39:32,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-22 15:39:32,491 INFO L354 Elim1Store]: treesize reduction 120, result has 20.5 percent of original size [2021-11-22 15:39:32,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 87 [2021-11-22 15:39:32,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:32,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 61 treesize of output 22 [2021-11-22 15:39:32,796 INFO L354 Elim1Store]: treesize reduction 315, result has 18.4 percent of original size [2021-11-22 15:39:32,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 134 [2021-11-22 15:39:32,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:32,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 10 [2021-11-22 15:39:33,108 INFO L354 Elim1Store]: treesize reduction 528, result has 17.1 percent of original size [2021-11-22 15:39:33,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 114 treesize of output 175 [2021-11-22 15:39:33,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:33,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:33,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:33,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:33,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:33,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 47 [2021-11-22 15:39:34,500 INFO L354 Elim1Store]: treesize reduction 419, result has 30.9 percent of original size [2021-11-22 15:39:34,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 107 treesize of output 260 [2021-11-22 15:39:34,727 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:39:34,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:39:35,143 INFO L354 Elim1Store]: treesize reduction 150, result has 22.3 percent of original size [2021-11-22 15:39:35,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 354 treesize of output 296 [2021-11-22 15:39:38,286 INFO L354 Elim1Store]: treesize reduction 1514, result has 18.6 percent of original size [2021-11-22 15:39:38,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 385 treesize of output 606 [2021-11-22 15:39:38,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:38,521 INFO L244 Elim1Store]: Index analysis took 103 ms [2021-11-22 15:39:38,616 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:39:38,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 167 [2021-11-22 15:39:38,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:39:40,970 INFO L354 Elim1Store]: treesize reduction 1085, result has 0.1 percent of original size [2021-11-22 15:39:40,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 948 treesize of output 707 [2021-11-22 15:39:40,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:40,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 44 [2021-11-22 15:39:41,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 45 [2021-11-22 15:39:41,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:39:41,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 353 treesize of output 213 [2021-11-22 15:39:45,485 INFO L354 Elim1Store]: treesize reduction 5052, result has 0.7 percent of original size [2021-11-22 15:39:45,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 483 treesize of output 125 [2021-11-22 15:39:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:39:45,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:43:02,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:43:02,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 383 treesize of output 383 [2021-11-22 15:43:03,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 4 [2021-11-22 15:43:03,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 325 [2021-11-22 15:43:04,619 INFO L354 Elim1Store]: treesize reduction 102, result has 44.9 percent of original size [2021-11-22 15:43:04,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 7044634335 treesize of output 6948165412