/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:51:10,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:51:10,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:51:10,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 02:51:10,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 02:51:10,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 02:51:10,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 02:51:10,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 02:51:10,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 02:51:10,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 02:51:10,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 02:51:10,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 02:51:10,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 02:51:10,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 02:51:10,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 02:51:10,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 02:51:10,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 02:51:10,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:51:10,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:51:10,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:51:10,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 02:51:10,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:51:10,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:51:10,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:51:10,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:51:10,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:51:10,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:51:10,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:51:10,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:51:10,492 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:51:10,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:51:10,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:51:10,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:51:10,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:51:10,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:51:10,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:51:10,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:51:10,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:51:10,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:51:10,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:51:10,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:51:10,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:51:10,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:51:10,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:51:10,496 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:51:10,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:51:10,496 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:51:10,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:51:10,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:51:10,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:51:10,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:51:10,739 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:51:10,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-01-18 02:51:10,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3db5ef1/58c2a4cf6ce94f329572e3d02e69e80f/FLAGfe8795930 [2022-01-18 02:51:11,138 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:51:11,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-01-18 02:51:11,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3db5ef1/58c2a4cf6ce94f329572e3d02e69e80f/FLAGfe8795930 [2022-01-18 02:51:11,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3db5ef1/58c2a4cf6ce94f329572e3d02e69e80f [2022-01-18 02:51:11,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:51:11,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:51:11,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:51:11,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:51:11,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:51:11,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecd57c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11, skipping insertion in model container [2022-01-18 02:51:11,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:51:11,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:51:11,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-01-18 02:51:11,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:51:11,764 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:51:11,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-01-18 02:51:11,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:51:11,803 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:51:11,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11 WrapperNode [2022-01-18 02:51:11,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:51:11,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:51:11,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:51:11,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:51:11,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,845 INFO L137 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 128 [2022-01-18 02:51:11,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:51:11,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:51:11,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:51:11,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:51:11,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:51:11,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:51:11,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:51:11,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:51:11,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (1/1) ... [2022-01-18 02:51:11,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:51:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:11,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 02:51:11,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 02:51:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:51:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:51:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:51:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:51:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:51:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:51:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:51:11,949 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:51:12,008 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:51:12,009 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:51:12,252 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:51:12,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:51:12,305 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 02:51:12,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:51:12 BoogieIcfgContainer [2022-01-18 02:51:12,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:51:12,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:51:12,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:51:12,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:51:12,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:51:11" (1/3) ... [2022-01-18 02:51:12,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53657ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:51:12, skipping insertion in model container [2022-01-18 02:51:12,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:51:11" (2/3) ... [2022-01-18 02:51:12,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53657ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:51:12, skipping insertion in model container [2022-01-18 02:51:12,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:51:12" (3/3) ... [2022-01-18 02:51:12,314 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-01-18 02:51:12,318 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:51:12,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:51:12,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:51:12,318 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:51:12,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,352 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,354 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:51:12,360 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:51:12,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:51:12,394 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=FINITE_AUTOMATA, 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 [2022-01-18 02:51:12,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:51:12,417 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 120 transitions, 256 flow [2022-01-18 02:51:12,481 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 02:51:12,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:12,501 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:12,502 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash -571534812, now seen corresponding path program 1 times [2022-01-18 02:51:12,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:12,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949515446] [2022-01-18 02:51:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:12,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:12,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:12,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949515446] [2022-01-18 02:51:12,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949515446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:51:12,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:51:12,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:51:12,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133221685] [2022-01-18 02:51:12,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:51:12,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:51:12,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:12,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:51:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:51:12,772 INFO L87 Difference]: Start difference. First operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 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 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:12,820 INFO L93 Difference]: Finished difference Result 335 states and 742 transitions. [2022-01-18 02:51:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:51:12,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 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 85 [2022-01-18 02:51:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:12,835 INFO L225 Difference]: With dead ends: 335 [2022-01-18 02:51:12,835 INFO L226 Difference]: Without dead ends: 332 [2022-01-18 02:51:12,836 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 [2022-01-18 02:51:12,838 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:12,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:51:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-18 02:51:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-01-18 02:51:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2326283987915407) internal successors, (739), 331 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 739 transitions. [2022-01-18 02:51:12,882 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 739 transitions. Word has length 85 [2022-01-18 02:51:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:12,883 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 739 transitions. [2022-01-18 02:51:12,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 739 transitions. [2022-01-18 02:51:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-18 02:51:12,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:12,886 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:12,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:51:12,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1476274669, now seen corresponding path program 1 times [2022-01-18 02:51:12,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:12,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831914821] [2022-01-18 02:51:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:12,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:13,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:13,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831914821] [2022-01-18 02:51:13,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831914821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:51:13,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:51:13,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:51:13,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239045888] [2022-01-18 02:51:13,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:51:13,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:51:13,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:13,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:51:13,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:51:13,116 INFO L87 Difference]: Start difference. First operand 332 states and 739 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:13,191 INFO L93 Difference]: Finished difference Result 555 states and 1326 transitions. [2022-01-18 02:51:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:51:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 87 [2022-01-18 02:51:13,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:13,198 INFO L225 Difference]: With dead ends: 555 [2022-01-18 02:51:13,198 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 02:51:13,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:51:13,201 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 16 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:13,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 306 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:51:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 02:51:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 363. [2022-01-18 02:51:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.270718232044199) internal successors, (822), 362 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 822 transitions. [2022-01-18 02:51:13,229 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 822 transitions. Word has length 87 [2022-01-18 02:51:13,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:13,230 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 822 transitions. [2022-01-18 02:51:13,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 822 transitions. [2022-01-18 02:51:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-18 02:51:13,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:13,233 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:13,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:51:13,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:13,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash -591405311, now seen corresponding path program 1 times [2022-01-18 02:51:13,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:13,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175779149] [2022-01-18 02:51:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:13,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:13,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175779149] [2022-01-18 02:51:13,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175779149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:51:13,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:51:13,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 02:51:13,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800306311] [2022-01-18 02:51:13,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:51:13,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 02:51:13,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 02:51:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 02:51:13,358 INFO L87 Difference]: Start difference. First operand 363 states and 822 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:13,380 INFO L93 Difference]: Finished difference Result 498 states and 1124 transitions. [2022-01-18 02:51:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 02:51:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-01-18 02:51:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:13,382 INFO L225 Difference]: With dead ends: 498 [2022-01-18 02:51:13,382 INFO L226 Difference]: Without dead ends: 417 [2022-01-18 02:51:13,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 02:51:13,383 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:13,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:51:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-18 02:51:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-01-18 02:51:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 2.2716346153846154) internal successors, (945), 416 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 945 transitions. [2022-01-18 02:51:13,404 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 945 transitions. Word has length 90 [2022-01-18 02:51:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:13,405 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 945 transitions. [2022-01-18 02:51:13,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 945 transitions. [2022-01-18 02:51:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-18 02:51:13,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:13,409 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:13,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 02:51:13,409 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash 764156185, now seen corresponding path program 1 times [2022-01-18 02:51:13,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:13,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294123364] [2022-01-18 02:51:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:13,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:51:13,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:13,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294123364] [2022-01-18 02:51:13,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294123364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:51:13,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:51:13,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 02:51:13,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441256779] [2022-01-18 02:51:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:51:13,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 02:51:13,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 02:51:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 02:51:13,514 INFO L87 Difference]: Start difference. First operand 417 states and 945 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:13,604 INFO L93 Difference]: Finished difference Result 486 states and 1066 transitions. [2022-01-18 02:51:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 02:51:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 93 [2022-01-18 02:51:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:13,607 INFO L225 Difference]: With dead ends: 486 [2022-01-18 02:51:13,607 INFO L226 Difference]: Without dead ends: 423 [2022-01-18 02:51:13,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 02:51:13,611 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 226 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:13,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 267 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:51:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-18 02:51:13,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2022-01-18 02:51:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.2685851318944845) internal successors, (946), 417 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 946 transitions. [2022-01-18 02:51:13,633 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 946 transitions. Word has length 93 [2022-01-18 02:51:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:13,634 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 946 transitions. [2022-01-18 02:51:13,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 946 transitions. [2022-01-18 02:51:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:51:13,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:13,641 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, 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, 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] [2022-01-18 02:51:13,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 02:51:13,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1391817806, now seen corresponding path program 1 times [2022-01-18 02:51:13,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:13,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160303962] [2022-01-18 02:51:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:13,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:14,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:14,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160303962] [2022-01-18 02:51:14,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160303962] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:14,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302936179] [2022-01-18 02:51:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:14,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:14,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:14,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:51:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:14,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 02:51:14,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:15,017 INFO L387 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 15 treesize of output 11 [2022-01-18 02:51:15,323 INFO L387 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 6 treesize of output 5 [2022-01-18 02:51:15,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:51:15,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:15,618 INFO L387 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 23 treesize of output 7 [2022-01-18 02:51:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:15,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:15,735 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_68 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_68) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-01-18 02:51:16,416 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:16,416 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-01-18 02:51:16,424 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:16,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 170 [2022-01-18 02:51:16,433 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:16,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 152 [2022-01-18 02:51:16,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-01-18 02:51:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-18 02:51:17,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302936179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:17,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:17,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 54 [2022-01-18 02:51:17,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354647318] [2022-01-18 02:51:17,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:17,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-18 02:51:17,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-18 02:51:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2539, Unknown=11, NotChecked=102, Total=2862 [2022-01-18 02:51:17,175 INFO L87 Difference]: Start difference. First operand 418 states and 946 transitions. Second operand has 54 states, 54 states have (on average 4.425925925925926) internal successors, (239), 54 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:20,662 INFO L93 Difference]: Finished difference Result 2599 states and 6539 transitions. [2022-01-18 02:51:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:51:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.425925925925926) internal successors, (239), 54 states have internal predecessors, (239), 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 100 [2022-01-18 02:51:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:20,683 INFO L225 Difference]: With dead ends: 2599 [2022-01-18 02:51:20,683 INFO L226 Difference]: Without dead ends: 2209 [2022-01-18 02:51:20,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1167, Invalid=7013, Unknown=14, NotChecked=178, Total=8372 [2022-01-18 02:51:20,687 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 2104 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 962 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:20,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2104 Valid, 2756 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1076 Invalid, 0 Unknown, 962 Unchecked, 0.6s Time] [2022-01-18 02:51:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2022-01-18 02:51:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 627. [2022-01-18 02:51:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 2.2859424920127798) internal successors, (1431), 626 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1431 transitions. [2022-01-18 02:51:20,712 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1431 transitions. Word has length 100 [2022-01-18 02:51:20,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:20,713 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1431 transitions. [2022-01-18 02:51:20,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.425925925925926) internal successors, (239), 54 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1431 transitions. [2022-01-18 02:51:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-18 02:51:20,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:20,715 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:20,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:20,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:20,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash 205024512, now seen corresponding path program 2 times [2022-01-18 02:51:20,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:20,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571929269] [2022-01-18 02:51:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:20,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:51:20,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:20,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571929269] [2022-01-18 02:51:20,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571929269] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:20,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937653906] [2022-01-18 02:51:20,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:51:20,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:20,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:20,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:21,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:51:21,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:51:21,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:21,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:51:21,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:21,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:21,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937653906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:21,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:21,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-01-18 02:51:21,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942488145] [2022-01-18 02:51:21,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:21,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:51:21,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:51:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:51:21,827 INFO L87 Difference]: Start difference. First operand 627 states and 1431 transitions. Second operand has 22 states, 22 states have (on average 10.409090909090908) internal successors, (229), 22 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:22,113 INFO L93 Difference]: Finished difference Result 1497 states and 3607 transitions. [2022-01-18 02:51:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 02:51:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.409090909090908) internal successors, (229), 22 states have internal predecessors, (229), 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 103 [2022-01-18 02:51:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:22,118 INFO L225 Difference]: With dead ends: 1497 [2022-01-18 02:51:22,118 INFO L226 Difference]: Without dead ends: 1072 [2022-01-18 02:51:22,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:51:22,119 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 818 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:22,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 834 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:51:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-01-18 02:51:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 765. [2022-01-18 02:51:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 2.4489528795811517) internal successors, (1871), 764 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1871 transitions. [2022-01-18 02:51:22,137 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1871 transitions. Word has length 103 [2022-01-18 02:51:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:22,138 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1871 transitions. [2022-01-18 02:51:22,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.409090909090908) internal successors, (229), 22 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1871 transitions. [2022-01-18 02:51:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 02:51:22,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:22,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:22,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:22,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 02:51:22,355 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1676131039, now seen corresponding path program 3 times [2022-01-18 02:51:22,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:22,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880307752] [2022-01-18 02:51:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:22,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:22,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:22,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880307752] [2022-01-18 02:51:22,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880307752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:22,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409192638] [2022-01-18 02:51:22,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:51:22,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:22,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:22,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:51:23,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:51:23,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:51:23,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:23,341 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:51:23,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:51:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:51:23,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:23,418 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:51:23,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:51:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:51:23,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409192638] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:23,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:23,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7, 7] total 22 [2022-01-18 02:51:23,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263570506] [2022-01-18 02:51:23,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:51:23,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:51:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:51:23,630 INFO L87 Difference]: Start difference. First operand 765 states and 1871 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:24,336 INFO L93 Difference]: Finished difference Result 1936 states and 4881 transitions. [2022-01-18 02:51:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 02:51:24,337 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 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 107 [2022-01-18 02:51:24,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:24,342 INFO L225 Difference]: With dead ends: 1936 [2022-01-18 02:51:24,342 INFO L226 Difference]: Without dead ends: 1665 [2022-01-18 02:51:24,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=341, Invalid=1551, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 02:51:24,344 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 484 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:24,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1016 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 404 Invalid, 0 Unknown, 6 Unchecked, 0.2s Time] [2022-01-18 02:51:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-01-18 02:51:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 801. [2022-01-18 02:51:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 2.4475) internal successors, (1958), 800 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1958 transitions. [2022-01-18 02:51:24,364 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1958 transitions. Word has length 107 [2022-01-18 02:51:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:24,364 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1958 transitions. [2022-01-18 02:51:24,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1958 transitions. [2022-01-18 02:51:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 02:51:24,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:24,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:24,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:24,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:24,583 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:24,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1502924419, now seen corresponding path program 4 times [2022-01-18 02:51:24,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:24,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114884463] [2022-01-18 02:51:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:24,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:25,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114884463] [2022-01-18 02:51:25,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114884463] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148524444] [2022-01-18 02:51:25,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:51:25,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:25,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:25,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:51:25,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:51:25,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:25,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 02:51:25,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:25,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:51:25,960 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:51:25,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:51:26,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:26,666 INFO L387 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 23 treesize of output 7 [2022-01-18 02:51:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:26,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:26,771 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_150 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_150) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-01-18 02:51:26,813 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:26,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:51:26,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:51:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-18 02:51:27,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148524444] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:27,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:27,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 56 [2022-01-18 02:51:27,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505413226] [2022-01-18 02:51:27,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:27,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-18 02:51:27,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-18 02:51:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2736, Unknown=1, NotChecked=106, Total=3080 [2022-01-18 02:51:27,983 INFO L87 Difference]: Start difference. First operand 801 states and 1958 transitions. Second operand has 56 states, 56 states have (on average 4.625) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:30,618 INFO L93 Difference]: Finished difference Result 3118 states and 8039 transitions. [2022-01-18 02:51:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:51:30,631 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.625) internal successors, (259), 56 states have internal predecessors, (259), 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 107 [2022-01-18 02:51:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:30,641 INFO L225 Difference]: With dead ends: 3118 [2022-01-18 02:51:30,641 INFO L226 Difference]: Without dead ends: 3023 [2022-01-18 02:51:30,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1622 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1107, Invalid=7086, Unknown=1, NotChecked=178, Total=8372 [2022-01-18 02:51:30,643 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 1619 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:30,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 2670 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 980 Invalid, 0 Unknown, 301 Unchecked, 0.5s Time] [2022-01-18 02:51:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-01-18 02:51:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1021. [2022-01-18 02:51:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 2.4529411764705884) internal successors, (2502), 1020 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 2502 transitions. [2022-01-18 02:51:30,684 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 2502 transitions. Word has length 107 [2022-01-18 02:51:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:30,684 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 2502 transitions. [2022-01-18 02:51:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.625) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 2502 transitions. [2022-01-18 02:51:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 02:51:30,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:30,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:30,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:30,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:30,909 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1866038787, now seen corresponding path program 5 times [2022-01-18 02:51:30,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:30,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981518348] [2022-01-18 02:51:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:30,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:31,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:31,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981518348] [2022-01-18 02:51:31,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981518348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:31,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532685898] [2022-01-18 02:51:31,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:51:31,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:31,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:31,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:51:31,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:51:31,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:31,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 02:51:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:31,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:51:31,844 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:51:31,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:51:32,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:32,178 INFO L387 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 23 treesize of output 7 [2022-01-18 02:51:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:51:32,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:32,242 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_180) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-01-18 02:51:32,268 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:32,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:51:32,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:51:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-01-18 02:51:32,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532685898] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:32,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:32,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 14] total 36 [2022-01-18 02:51:32,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053874533] [2022-01-18 02:51:32,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:32,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:51:32,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:32,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:51:32,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1098, Unknown=1, NotChecked=66, Total=1260 [2022-01-18 02:51:32,664 INFO L87 Difference]: Start difference. First operand 1021 states and 2502 transitions. Second operand has 36 states, 36 states have (on average 5.805555555555555) internal successors, (209), 36 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:34,392 INFO L93 Difference]: Finished difference Result 2824 states and 7280 transitions. [2022-01-18 02:51:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:51:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.805555555555555) internal successors, (209), 36 states have internal predecessors, (209), 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 107 [2022-01-18 02:51:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:34,400 INFO L225 Difference]: With dead ends: 2824 [2022-01-18 02:51:34,401 INFO L226 Difference]: Without dead ends: 2555 [2022-01-18 02:51:34,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=632, Invalid=3661, Unknown=1, NotChecked=128, Total=4422 [2022-01-18 02:51:34,402 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 1031 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 2315 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 889 Invalid, 0 Unknown, 194 Unchecked, 0.4s Time] [2022-01-18 02:51:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2022-01-18 02:51:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 763. [2022-01-18 02:51:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 2.4698162729658795) internal successors, (1882), 762 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1882 transitions. [2022-01-18 02:51:34,422 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1882 transitions. Word has length 107 [2022-01-18 02:51:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:34,422 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1882 transitions. [2022-01-18 02:51:34,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.805555555555555) internal successors, (209), 36 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1882 transitions. [2022-01-18 02:51:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-18 02:51:34,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:34,423 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2022-01-18 02:51:34,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 02:51:34,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:34,639 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:34,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1977634385, now seen corresponding path program 6 times [2022-01-18 02:51:34,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804422785] [2022-01-18 02:51:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:35,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804422785] [2022-01-18 02:51:35,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804422785] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862592320] [2022-01-18 02:51:35,131 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:51:35,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:35,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:35,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:51:35,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:51:35,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:35,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 02:51:35,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:35,870 INFO L387 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 15 treesize of output 11 [2022-01-18 02:51:36,170 INFO L387 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 6 treesize of output 5 [2022-01-18 02:51:36,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:51:36,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:36,638 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:51:36,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:51:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:36,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:36,761 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_212 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_212) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-01-18 02:51:37,794 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:37,795 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2022-01-18 02:51:37,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:37,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 177 [2022-01-18 02:51:37,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 108 [2022-01-18 02:51:37,826 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:37,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 83 [2022-01-18 02:51:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-18 02:51:39,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862592320] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:39,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:39,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 66 [2022-01-18 02:51:39,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144848510] [2022-01-18 02:51:39,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:39,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-18 02:51:39,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-18 02:51:39,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=3879, Unknown=7, NotChecked=126, Total=4290 [2022-01-18 02:51:39,073 INFO L87 Difference]: Start difference. First operand 763 states and 1882 transitions. Second operand has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:42,918 INFO L93 Difference]: Finished difference Result 2445 states and 6386 transitions. [2022-01-18 02:51:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:51:42,918 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 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 113 [2022-01-18 02:51:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:42,926 INFO L225 Difference]: With dead ends: 2445 [2022-01-18 02:51:42,926 INFO L226 Difference]: Without dead ends: 2435 [2022-01-18 02:51:42,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1178, Invalid=8719, Unknown=7, NotChecked=196, Total=10100 [2022-01-18 02:51:42,928 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1956 mSDsluCounter, 3872 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:42,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 3814 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 934 Invalid, 0 Unknown, 664 Unchecked, 0.5s Time] [2022-01-18 02:51:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2022-01-18 02:51:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 983. [2022-01-18 02:51:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 2.4409368635437882) internal successors, (2397), 982 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 2397 transitions. [2022-01-18 02:51:42,951 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 2397 transitions. Word has length 113 [2022-01-18 02:51:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:42,951 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 2397 transitions. [2022-01-18 02:51:42,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 2397 transitions. [2022-01-18 02:51:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-18 02:51:42,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:42,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2022-01-18 02:51:42,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 02:51:43,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:43,169 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash -727309383, now seen corresponding path program 7 times [2022-01-18 02:51:43,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:43,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959859802] [2022-01-18 02:51:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:43,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:43,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959859802] [2022-01-18 02:51:43,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959859802] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713633414] [2022-01-18 02:51:43,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:51:43,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:43,617 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:43,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:51:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 02:51:43,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:43,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:51:43,878 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:51:43,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:51:44,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:44,698 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:51:44,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:51:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:44,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:44,811 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_242 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_242) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-01-18 02:51:44,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:44,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:51:44,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:51:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-18 02:51:46,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713633414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:46,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:46,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 62 [2022-01-18 02:51:46,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080694762] [2022-01-18 02:51:46,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:46,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 02:51:46,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 02:51:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3409, Unknown=1, NotChecked=118, Total=3782 [2022-01-18 02:51:46,680 INFO L87 Difference]: Start difference. First operand 983 states and 2397 transitions. Second operand has 62 states, 62 states have (on average 4.467741935483871) internal successors, (277), 62 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:52,405 INFO L93 Difference]: Finished difference Result 5361 states and 14098 transitions. [2022-01-18 02:51:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 02:51:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.467741935483871) internal successors, (277), 62 states have internal predecessors, (277), 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 113 [2022-01-18 02:51:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:52,425 INFO L225 Difference]: With dead ends: 5361 [2022-01-18 02:51:52,425 INFO L226 Difference]: Without dead ends: 4441 [2022-01-18 02:51:52,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 191 SyntacticMatches, 14 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3435 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1604, Invalid=11970, Unknown=2, NotChecked=230, Total=13806 [2022-01-18 02:51:52,429 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 2228 mSDsluCounter, 6334 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 6013 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 722 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:52,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2228 Valid, 6013 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1762 Invalid, 0 Unknown, 722 Unchecked, 0.8s Time] [2022-01-18 02:51:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2022-01-18 02:51:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 1569. [2022-01-18 02:51:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 2.6830357142857144) internal successors, (4207), 1568 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 4207 transitions. [2022-01-18 02:51:52,486 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 4207 transitions. Word has length 113 [2022-01-18 02:51:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:52,486 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 4207 transitions. [2022-01-18 02:51:52,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.467741935483871) internal successors, (277), 62 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4207 transitions. [2022-01-18 02:51:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-18 02:51:52,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:52,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2022-01-18 02:51:52,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:52,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:52,703 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash 561755483, now seen corresponding path program 8 times [2022-01-18 02:51:52,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:52,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942645693] [2022-01-18 02:51:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:52,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:53,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:53,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942645693] [2022-01-18 02:51:53,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942645693] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:53,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449470036] [2022-01-18 02:51:53,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:51:53,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:53,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:53,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:53,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:51:53,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:51:53,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:53,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 02:51:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:53,716 INFO L387 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 15 treesize of output 11 [2022-01-18 02:51:53,961 INFO L387 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 6 treesize of output 5 [2022-01-18 02:51:54,082 INFO L387 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 6 treesize of output 5 [2022-01-18 02:51:54,263 INFO L387 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 23 treesize of output 7 [2022-01-18 02:51:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:54,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:55,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:55,123 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-18 02:51:55,130 INFO L353 Elim1Store]: treesize reduction 11, result has 38.9 percent of original size [2022-01-18 02:51:55,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 316 treesize of output 287 [2022-01-18 02:51:55,137 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-01-18 02:51:55,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 280 treesize of output 252 [2022-01-18 02:51:55,144 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-01-18 02:51:55,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 196 [2022-01-18 02:51:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:55,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449470036] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:55,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:55,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 23] total 61 [2022-01-18 02:51:55,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841014628] [2022-01-18 02:51:55,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:55,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-18 02:51:55,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-18 02:51:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=3043, Unknown=43, NotChecked=0, Total=3660 [2022-01-18 02:51:55,654 INFO L87 Difference]: Start difference. First operand 1569 states and 4207 transitions. Second operand has 61 states, 61 states have (on average 4.426229508196721) internal successors, (270), 61 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:58,478 INFO L93 Difference]: Finished difference Result 7818 states and 21302 transitions. [2022-01-18 02:51:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 02:51:58,479 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.426229508196721) internal successors, (270), 61 states have internal predecessors, (270), 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 113 [2022-01-18 02:51:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:58,495 INFO L225 Difference]: With dead ends: 7818 [2022-01-18 02:51:58,495 INFO L226 Difference]: Without dead ends: 7732 [2022-01-18 02:51:58,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2093, Invalid=10970, Unknown=47, NotChecked=0, Total=13110 [2022-01-18 02:51:58,496 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1772 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 3996 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 705 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:58,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1772 Valid, 3996 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1188 Invalid, 0 Unknown, 705 Unchecked, 0.5s Time] [2022-01-18 02:51:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2022-01-18 02:51:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 1892. [2022-01-18 02:51:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.6980433632998415) internal successors, (5102), 1891 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5102 transitions. [2022-01-18 02:51:58,554 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5102 transitions. Word has length 113 [2022-01-18 02:51:58,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:58,554 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5102 transitions. [2022-01-18 02:51:58,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.426229508196721) internal successors, (270), 61 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5102 transitions. [2022-01-18 02:51:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-18 02:51:58,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:58,558 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2022-01-18 02:51:58,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:58,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 02:51:58,792 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -991406427, now seen corresponding path program 9 times [2022-01-18 02:51:58,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530933216] [2022-01-18 02:51:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:58,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:59,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530933216] [2022-01-18 02:51:59,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530933216] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881000110] [2022-01-18 02:51:59,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:51:59,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:59,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:59,159 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:59,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:51:59,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:51:59,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:59,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:51:59,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:59,687 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:51:59,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:51:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:51:59,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:59,767 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:51:59,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:52:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:52:00,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881000110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:00,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:00,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 41 [2022-01-18 02:52:00,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217359201] [2022-01-18 02:52:00,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:00,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:52:00,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:52:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:52:00,094 INFO L87 Difference]: Start difference. First operand 1892 states and 5102 transitions. Second operand has 41 states, 41 states have (on average 5.512195121951219) internal successors, (226), 41 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:01,806 INFO L93 Difference]: Finished difference Result 2540 states and 6336 transitions. [2022-01-18 02:52:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:52:01,806 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.512195121951219) internal successors, (226), 41 states have internal predecessors, (226), 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 113 [2022-01-18 02:52:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:01,810 INFO L225 Difference]: With dead ends: 2540 [2022-01-18 02:52:01,810 INFO L226 Difference]: Without dead ends: 1899 [2022-01-18 02:52:01,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1084, Invalid=5078, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:52:01,811 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1585 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:01,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 3709 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 969 Invalid, 0 Unknown, 153 Unchecked, 0.4s Time] [2022-01-18 02:52:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-01-18 02:52:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1281. [2022-01-18 02:52:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.49609375) internal successors, (3195), 1280 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 3195 transitions. [2022-01-18 02:52:01,831 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 3195 transitions. Word has length 113 [2022-01-18 02:52:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:01,831 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 3195 transitions. [2022-01-18 02:52:01,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.512195121951219) internal successors, (226), 41 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 3195 transitions. [2022-01-18 02:52:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-18 02:52:01,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:01,834 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2022-01-18 02:52:01,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 02:52:02,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 02:52:02,047 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:02,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1464522753, now seen corresponding path program 10 times [2022-01-18 02:52:02,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:02,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050637098] [2022-01-18 02:52:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:02,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:52:02,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:02,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050637098] [2022-01-18 02:52:02,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050637098] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:02,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639538080] [2022-01-18 02:52:02,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:52:02,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:02,084 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:02,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:52:02,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:52:02,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:52:02,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:52:02,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:52:03,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639538080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:03,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:03,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 28 [2022-01-18 02:52:03,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594889093] [2022-01-18 02:52:03,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:03,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 02:52:03,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 02:52:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2022-01-18 02:52:03,172 INFO L87 Difference]: Start difference. First operand 1281 states and 3195 transitions. Second operand has 28 states, 28 states have (on average 9.321428571428571) internal successors, (261), 28 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:03,590 INFO L93 Difference]: Finished difference Result 2414 states and 6099 transitions. [2022-01-18 02:52:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 02:52:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.321428571428571) internal successors, (261), 28 states have internal predecessors, (261), 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 116 [2022-01-18 02:52:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:03,596 INFO L225 Difference]: With dead ends: 2414 [2022-01-18 02:52:03,596 INFO L226 Difference]: Without dead ends: 2022 [2022-01-18 02:52:03,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 02:52:03,598 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 1083 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:03,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1114 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:52:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2022-01-18 02:52:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1446. [2022-01-18 02:52:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.6083044982698964) internal successors, (3769), 1445 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 3769 transitions. [2022-01-18 02:52:03,631 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 3769 transitions. Word has length 116 [2022-01-18 02:52:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:03,631 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 3769 transitions. [2022-01-18 02:52:03,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.321428571428571) internal successors, (261), 28 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 3769 transitions. [2022-01-18 02:52:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-18 02:52:03,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:03,634 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:03,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:03,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 02:52:03,850 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash -604479388, now seen corresponding path program 11 times [2022-01-18 02:52:03,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:03,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638798018] [2022-01-18 02:52:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:03,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:04,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:04,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638798018] [2022-01-18 02:52:04,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638798018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:04,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714607551] [2022-01-18 02:52:04,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:52:04,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:04,498 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:04,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:52:04,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:52:04,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:04,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 02:52:04,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:04,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:52:04,693 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:52:04,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:52:05,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:52:05,099 INFO L387 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 23 treesize of output 7 [2022-01-18 02:52:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 02:52:05,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:05,159 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_364) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-01-18 02:52:05,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:05,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:52:05,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:52:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 2 not checked. [2022-01-18 02:52:05,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714607551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:05,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:05,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 16] total 43 [2022-01-18 02:52:05,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142982596] [2022-01-18 02:52:05,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:05,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 02:52:05,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 02:52:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1605, Unknown=1, NotChecked=80, Total=1806 [2022-01-18 02:52:05,676 INFO L87 Difference]: Start difference. First operand 1446 states and 3769 transitions. Second operand has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:08,246 INFO L93 Difference]: Finished difference Result 6551 states and 17556 transitions. [2022-01-18 02:52:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:52:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 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 120 [2022-01-18 02:52:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:08,256 INFO L225 Difference]: With dead ends: 6551 [2022-01-18 02:52:08,257 INFO L226 Difference]: Without dead ends: 4677 [2022-01-18 02:52:08,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1031, Invalid=6982, Unknown=1, NotChecked=176, Total=8190 [2022-01-18 02:52:08,258 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1514 mSDsluCounter, 4555 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 547 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:08,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 4267 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1714 Invalid, 0 Unknown, 547 Unchecked, 0.7s Time] [2022-01-18 02:52:08,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-01-18 02:52:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 1170. [2022-01-18 02:52:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.5526090675791275) internal successors, (2984), 1169 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2984 transitions. [2022-01-18 02:52:08,312 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2984 transitions. Word has length 120 [2022-01-18 02:52:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:08,313 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2984 transitions. [2022-01-18 02:52:08,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2984 transitions. [2022-01-18 02:52:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:52:08,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:08,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:08,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:08,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 02:52:08,533 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1491316526, now seen corresponding path program 12 times [2022-01-18 02:52:08,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484374813] [2022-01-18 02:52:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:09,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484374813] [2022-01-18 02:52:09,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484374813] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139155674] [2022-01-18 02:52:09,091 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:52:09,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:09,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:09,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:52:09,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:52:09,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:09,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 02:52:09,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:09,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:52:09,585 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:52:09,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:52:10,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:10,625 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:52:10,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:52:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 02:52:10,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:11,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:11,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:52:11,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:52:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 02:52:12,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139155674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:12,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:12,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 71 [2022-01-18 02:52:12,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968087211] [2022-01-18 02:52:12,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:12,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 02:52:12,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 02:52:12,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=4539, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:52:12,878 INFO L87 Difference]: Start difference. First operand 1170 states and 2984 transitions. Second operand has 71 states, 71 states have (on average 4.28169014084507) internal successors, (304), 71 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:15,690 INFO L93 Difference]: Finished difference Result 5738 states and 14930 transitions. [2022-01-18 02:52:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 02:52:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.28169014084507) internal successors, (304), 71 states have internal predecessors, (304), 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 126 [2022-01-18 02:52:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:15,697 INFO L225 Difference]: With dead ends: 5738 [2022-01-18 02:52:15,697 INFO L226 Difference]: Without dead ends: 5691 [2022-01-18 02:52:15,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1337, Invalid=11545, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 02:52:15,698 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1393 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 590 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:15,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 5522 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 992 Invalid, 0 Unknown, 590 Unchecked, 0.4s Time] [2022-01-18 02:52:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2022-01-18 02:52:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 2492. [2022-01-18 02:52:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2491 states have (on average 2.687675632276194) internal successors, (6695), 2491 states have internal predecessors, (6695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 6695 transitions. [2022-01-18 02:52:15,752 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 6695 transitions. Word has length 126 [2022-01-18 02:52:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:15,752 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 6695 transitions. [2022-01-18 02:52:15,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.28169014084507) internal successors, (304), 71 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 6695 transitions. [2022-01-18 02:52:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:52:15,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:15,756 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:15,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:15,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 02:52:15,972 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash -327907100, now seen corresponding path program 13 times [2022-01-18 02:52:15,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:15,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827816314] [2022-01-18 02:52:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:15,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:16,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:16,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827816314] [2022-01-18 02:52:16,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827816314] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:16,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182140843] [2022-01-18 02:52:16,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:52:16,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:16,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:16,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:52:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:16,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 02:52:16,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:16,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:52:16,812 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:52:16,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:52:17,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:17,939 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:52:17,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:52:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:17,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:18,087 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_432 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_432) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-01-18 02:52:18,110 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:18,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:52:18,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:52:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-18 02:52:20,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182140843] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:20,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:20,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 72 [2022-01-18 02:52:20,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636200146] [2022-01-18 02:52:20,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:20,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-18 02:52:20,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-18 02:52:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=4602, Unknown=1, NotChecked=138, Total=5112 [2022-01-18 02:52:20,291 INFO L87 Difference]: Start difference. First operand 2492 states and 6695 transitions. Second operand has 72 states, 72 states have (on average 4.25) internal successors, (306), 72 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:25,579 INFO L93 Difference]: Finished difference Result 14609 states and 40669 transitions. [2022-01-18 02:52:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:52:25,579 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.25) internal successors, (306), 72 states have internal predecessors, (306), 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 126 [2022-01-18 02:52:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:25,603 INFO L225 Difference]: With dead ends: 14609 [2022-01-18 02:52:25,603 INFO L226 Difference]: Without dead ends: 14584 [2022-01-18 02:52:25,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 216 SyntacticMatches, 12 SemanticMatches, 141 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 5131 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2477, Invalid=17540, Unknown=9, NotChecked=280, Total=20306 [2022-01-18 02:52:25,605 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1807 mSDsluCounter, 8963 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 8881 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1303 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:25,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1807 Valid, 8881 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1668 Invalid, 0 Unknown, 1303 Unchecked, 0.7s Time] [2022-01-18 02:52:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14584 states. [2022-01-18 02:52:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14584 to 3772. [2022-01-18 02:52:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3771 states have (on average 2.7974012198355873) internal successors, (10549), 3771 states have internal predecessors, (10549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 10549 transitions. [2022-01-18 02:52:25,716 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 10549 transitions. Word has length 126 [2022-01-18 02:52:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:25,716 INFO L470 AbstractCegarLoop]: Abstraction has 3772 states and 10549 transitions. [2022-01-18 02:52:25,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.25) internal successors, (306), 72 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 10549 transitions. [2022-01-18 02:52:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:52:25,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:25,728 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:25,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:25,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 02:52:25,953 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:25,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash 922417902, now seen corresponding path program 14 times [2022-01-18 02:52:25,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:25,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832474077] [2022-01-18 02:52:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:25,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:26,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:26,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832474077] [2022-01-18 02:52:26,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832474077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:26,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44161691] [2022-01-18 02:52:26,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:52:26,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:26,510 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:26,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:52:26,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:52:26,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:26,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 02:52:26,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:27,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:27,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:27,824 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:52:27,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:52:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:27,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:27,977 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_465 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_465) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-01-18 02:52:28,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:28,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:52:28,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:52:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-18 02:52:29,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44161691] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:29,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:29,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 74 [2022-01-18 02:52:29,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884594940] [2022-01-18 02:52:29,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:29,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:52:29,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:52:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=4911, Unknown=1, NotChecked=142, Total=5402 [2022-01-18 02:52:29,999 INFO L87 Difference]: Start difference. First operand 3772 states and 10549 transitions. Second operand has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:40,579 INFO L93 Difference]: Finished difference Result 20109 states and 55592 transitions. [2022-01-18 02:52:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 02:52:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 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 126 [2022-01-18 02:52:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:40,624 INFO L225 Difference]: With dead ends: 20109 [2022-01-18 02:52:40,624 INFO L226 Difference]: Without dead ends: 20088 [2022-01-18 02:52:40,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 207 SyntacticMatches, 9 SemanticMatches, 174 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7945 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4125, Invalid=26324, Unknown=5, NotChecked=346, Total=30800 [2022-01-18 02:52:40,626 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 2531 mSDsluCounter, 15209 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 15182 SdHoareTripleChecker+Invalid, 4860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1113 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:40,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2531 Valid, 15182 Invalid, 4860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 3457 Invalid, 0 Unknown, 1113 Unchecked, 1.5s Time] [2022-01-18 02:52:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20088 states. [2022-01-18 02:52:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20088 to 3781. [2022-01-18 02:52:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3780 states have (on average 2.7941798941798943) internal successors, (10562), 3780 states have internal predecessors, (10562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 10562 transitions. [2022-01-18 02:52:40,793 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 10562 transitions. Word has length 126 [2022-01-18 02:52:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:40,793 INFO L470 AbstractCegarLoop]: Abstraction has 3781 states and 10562 transitions. [2022-01-18 02:52:40,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 10562 transitions. [2022-01-18 02:52:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:52:40,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:40,799 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:40,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:41,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:41,020 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -786386696, now seen corresponding path program 15 times [2022-01-18 02:52:41,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:41,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282615026] [2022-01-18 02:52:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:41,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:41,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282615026] [2022-01-18 02:52:41,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282615026] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783255854] [2022-01-18 02:52:41,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:52:41,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:41,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:41,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:52:41,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:52:41,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:41,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-18 02:52:41,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:41,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:52:41,907 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:52:41,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:52:42,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:42,496 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:52:42,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:52:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:52:42,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:42,919 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:42,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:52:42,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:52:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:52:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783255854] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:44,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:44,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 18, 18] total 54 [2022-01-18 02:52:44,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464640285] [2022-01-18 02:52:44,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-18 02:52:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-18 02:52:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2580, Unknown=2, NotChecked=0, Total=2862 [2022-01-18 02:52:44,036 INFO L87 Difference]: Start difference. First operand 3781 states and 10562 transitions. Second operand has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:51,913 INFO L93 Difference]: Finished difference Result 7572 states and 20553 transitions. [2022-01-18 02:52:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 02:52:51,913 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 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 126 [2022-01-18 02:52:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:51,926 INFO L225 Difference]: With dead ends: 7572 [2022-01-18 02:52:51,926 INFO L226 Difference]: Without dead ends: 7520 [2022-01-18 02:52:51,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2461 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1124, Invalid=9174, Unknown=4, NotChecked=0, Total=10302 [2022-01-18 02:52:51,927 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1411 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:51,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 4099 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 654 Invalid, 0 Unknown, 191 Unchecked, 0.3s Time] [2022-01-18 02:52:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2022-01-18 02:52:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 4860. [2022-01-18 02:52:52,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4859 states have (on average 2.789257048775468) internal successors, (13553), 4859 states have internal predecessors, (13553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 13553 transitions. [2022-01-18 02:52:52,022 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 13553 transitions. Word has length 126 [2022-01-18 02:52:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:52,023 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 13553 transitions. [2022-01-18 02:52:52,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 13553 transitions. [2022-01-18 02:52:52,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:52:52,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:52,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:52,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:52,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:52,239 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:52,240 INFO L85 PathProgramCache]: Analyzing trace with hash 463938306, now seen corresponding path program 16 times [2022-01-18 02:52:52,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24626789] [2022-01-18 02:52:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:52,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:52,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:52,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24626789] [2022-01-18 02:52:52,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24626789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:52,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308943798] [2022-01-18 02:52:52,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:52:52,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:52,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:52,840 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:52,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:52:52,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:52:52,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:52,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 02:52:52,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:54,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:54,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:54,282 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:52:54,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:52:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:54,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:54,438 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_532 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_532) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-01-18 02:52:54,476 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:54,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:52:54,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:52:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-18 02:52:56,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308943798] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:56,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:56,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 72 [2022-01-18 02:52:56,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243958954] [2022-01-18 02:52:56,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:56,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-18 02:52:56,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-18 02:52:56,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=4624, Unknown=1, NotChecked=138, Total=5112 [2022-01-18 02:52:56,543 INFO L87 Difference]: Start difference. First operand 4860 states and 13553 transitions. Second operand has 72 states, 72 states have (on average 4.25) internal successors, (306), 72 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:07,672 INFO L93 Difference]: Finished difference Result 22212 states and 61686 transitions. [2022-01-18 02:53:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-18 02:53:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.25) internal successors, (306), 72 states have internal predecessors, (306), 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 126 [2022-01-18 02:53:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:07,712 INFO L225 Difference]: With dead ends: 22212 [2022-01-18 02:53:07,712 INFO L226 Difference]: Without dead ends: 22195 [2022-01-18 02:53:07,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 212 SyntacticMatches, 12 SemanticMatches, 173 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7980 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4119, Invalid=25985, Unknown=2, NotChecked=344, Total=30450 [2022-01-18 02:53:07,714 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 2531 mSDsluCounter, 17466 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 17705 SdHoareTripleChecker+Invalid, 5085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1202 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:07,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2531 Valid, 17705 Invalid, 5085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 3597 Invalid, 0 Unknown, 1202 Unchecked, 1.7s Time] [2022-01-18 02:53:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2022-01-18 02:53:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 6679. [2022-01-18 02:53:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 6678 states have (on average 2.8613357292602575) internal successors, (19108), 6678 states have internal predecessors, (19108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 19108 transitions. [2022-01-18 02:53:07,888 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 19108 transitions. Word has length 126 [2022-01-18 02:53:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:07,888 INFO L470 AbstractCegarLoop]: Abstraction has 6679 states and 19108 transitions. [2022-01-18 02:53:07,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.25) internal successors, (306), 72 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 19108 transitions. [2022-01-18 02:53:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:53:07,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:07,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:53:07,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:08,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:08,115 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2087910712, now seen corresponding path program 17 times [2022-01-18 02:53:08,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460637175] [2022-01-18 02:53:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:08,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:08,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460637175] [2022-01-18 02:53:08,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460637175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727588135] [2022-01-18 02:53:08,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:53:08,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:08,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:08,912 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:08,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:53:09,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:53:09,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:09,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-18 02:53:09,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:09,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:53:09,245 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:53:09,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:53:10,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:53:10,277 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:53:10,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:53:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:10,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:10,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:53:10,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:53:10,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:53:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:13,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727588135] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:13,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:13,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 74 [2022-01-18 02:53:13,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685210679] [2022-01-18 02:53:13,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:13,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:53:13,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:53:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=5014, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:53:13,026 INFO L87 Difference]: Start difference. First operand 6679 states and 19108 transitions. Second operand has 74 states, 74 states have (on average 4.162162162162162) internal successors, (308), 74 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:19,082 INFO L93 Difference]: Finished difference Result 15887 states and 45839 transitions. [2022-01-18 02:53:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:53:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.162162162162162) internal successors, (308), 74 states have internal predecessors, (308), 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 126 [2022-01-18 02:53:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:19,111 INFO L225 Difference]: With dead ends: 15887 [2022-01-18 02:53:19,111 INFO L226 Difference]: Without dead ends: 15869 [2022-01-18 02:53:19,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3527 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2458, Invalid=14054, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 02:53:19,112 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 2197 mSDsluCounter, 6866 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 6975 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 580 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:19,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2197 Valid, 6975 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1189 Invalid, 0 Unknown, 580 Unchecked, 0.6s Time] [2022-01-18 02:53:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15869 states. [2022-01-18 02:53:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15869 to 8782. [2022-01-18 02:53:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8782 states, 8781 states have (on average 2.9444254640701515) internal successors, (25855), 8781 states have internal predecessors, (25855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 25855 transitions. [2022-01-18 02:53:19,332 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 25855 transitions. Word has length 126 [2022-01-18 02:53:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:19,333 INFO L470 AbstractCegarLoop]: Abstraction has 8782 states and 25855 transitions. [2022-01-18 02:53:19,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.162162162162162) internal successors, (308), 74 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 25855 transitions. [2022-01-18 02:53:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:53:19,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:19,346 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:53:19,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:19,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:19,560 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1350167698, now seen corresponding path program 18 times [2022-01-18 02:53:19,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:19,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825557537] [2022-01-18 02:53:19,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:19,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:20,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:20,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825557537] [2022-01-18 02:53:20,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825557537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:20,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984924473] [2022-01-18 02:53:20,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:53:20,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:20,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:20,090 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:20,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:53:20,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:53:20,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:20,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 02:53:20,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:21,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:53:21,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:53:21,635 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:53:21,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:53:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:21,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:22,137 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:53:22,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:53:22,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:53:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 38 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:24,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984924473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:24,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:24,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 74 [2022-01-18 02:53:24,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370305593] [2022-01-18 02:53:24,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:24,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:53:24,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:53:24,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=4984, Unknown=12, NotChecked=0, Total=5402 [2022-01-18 02:53:24,512 INFO L87 Difference]: Start difference. First operand 8782 states and 25855 transitions. Second operand has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:35,181 WARN L228 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 69 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 02:53:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:40,809 INFO L93 Difference]: Finished difference Result 16795 states and 47212 transitions. [2022-01-18 02:53:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 02:53:40,809 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 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 126 [2022-01-18 02:53:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:40,837 INFO L225 Difference]: With dead ends: 16795 [2022-01-18 02:53:40,837 INFO L226 Difference]: Without dead ends: 16764 [2022-01-18 02:53:40,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4294 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=2150, Invalid=16197, Unknown=13, NotChecked=0, Total=18360 [2022-01-18 02:53:40,838 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 2350 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6194 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 644 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:40,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 6194 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1333 Invalid, 0 Unknown, 644 Unchecked, 0.6s Time] [2022-01-18 02:53:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16764 states. [2022-01-18 02:53:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16764 to 10069. [2022-01-18 02:53:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 10068 states have (on average 2.9204410011918953) internal successors, (29403), 10068 states have internal predecessors, (29403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 29403 transitions. [2022-01-18 02:53:41,071 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 29403 transitions. Word has length 126 [2022-01-18 02:53:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:41,071 INFO L470 AbstractCegarLoop]: Abstraction has 10069 states and 29403 transitions. [2022-01-18 02:53:41,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 29403 transitions. [2022-01-18 02:53:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:53:41,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:41,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:53:41,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:41,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:41,287 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash 273804708, now seen corresponding path program 19 times [2022-01-18 02:53:41,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:41,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428999115] [2022-01-18 02:53:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:41,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:41,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:41,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428999115] [2022-01-18 02:53:41,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428999115] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:41,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334380616] [2022-01-18 02:53:41,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:53:41,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:41,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:41,859 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:41,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:53:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:41,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 02:53:41,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:41,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:53:42,173 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:53:42,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:53:43,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:53:43,334 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:53:43,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:53:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:43,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:43,508 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_633) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-01-18 02:53:43,540 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:53:43,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:53:43,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:53:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-18 02:53:45,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334380616] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:45,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:45,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 72 [2022-01-18 02:53:45,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109057292] [2022-01-18 02:53:45,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:45,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-18 02:53:45,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-18 02:53:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=4620, Unknown=1, NotChecked=138, Total=5112 [2022-01-18 02:53:45,956 INFO L87 Difference]: Start difference. First operand 10069 states and 29403 transitions. Second operand has 72 states, 72 states have (on average 4.222222222222222) internal successors, (304), 72 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:56,720 INFO L93 Difference]: Finished difference Result 30943 states and 87959 transitions. [2022-01-18 02:53:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 02:53:56,721 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.222222222222222) internal successors, (304), 72 states have internal predecessors, (304), 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 126 [2022-01-18 02:53:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:56,775 INFO L225 Difference]: With dead ends: 30943 [2022-01-18 02:53:56,775 INFO L226 Difference]: Without dead ends: 30924 [2022-01-18 02:53:56,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 234 SyntacticMatches, 11 SemanticMatches, 179 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 8334 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4490, Invalid=27688, Unknown=46, NotChecked=356, Total=32580 [2022-01-18 02:53:56,776 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 2285 mSDsluCounter, 18414 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 18724 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2166 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:56,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2285 Valid, 18724 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 3462 Invalid, 0 Unknown, 2166 Unchecked, 1.6s Time] [2022-01-18 02:53:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30924 states. [2022-01-18 02:53:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30924 to 11773. [2022-01-18 02:53:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11772 states have (on average 2.9485219164118246) internal successors, (34710), 11772 states have internal predecessors, (34710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 34710 transitions. [2022-01-18 02:53:57,052 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 34710 transitions. Word has length 126 [2022-01-18 02:53:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:57,052 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 34710 transitions. [2022-01-18 02:53:57,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.222222222222222) internal successors, (304), 72 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 34710 transitions. [2022-01-18 02:53:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:53:57,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:57,069 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:53:57,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 02:53:57,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:57,270 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:57,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:57,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1391637688, now seen corresponding path program 20 times [2022-01-18 02:53:57,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:57,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89437990] [2022-01-18 02:53:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:57,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:57,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:57,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89437990] [2022-01-18 02:53:57,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89437990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:57,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045875473] [2022-01-18 02:53:57,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:53:57,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:57,837 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:57,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 02:53:57,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:53:57,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:57,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 02:53:57,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:58,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:53:58,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:53:59,215 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:53:59,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:53:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:59,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:59,387 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_666 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_666) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-01-18 02:53:59,424 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:53:59,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:53:59,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:54:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-18 02:54:01,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045875473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:01,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:01,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 74 [2022-01-18 02:54:01,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269296103] [2022-01-18 02:54:01,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:01,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:54:01,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:54:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=4911, Unknown=1, NotChecked=142, Total=5402 [2022-01-18 02:54:01,516 INFO L87 Difference]: Start difference. First operand 11773 states and 34710 transitions. Second operand has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:09,118 INFO L93 Difference]: Finished difference Result 25160 states and 72086 transitions. [2022-01-18 02:54:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 02:54:09,118 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 states have internal predecessors, (310), 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 126 [2022-01-18 02:54:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:09,166 INFO L225 Difference]: With dead ends: 25160 [2022-01-18 02:54:09,166 INFO L226 Difference]: Without dead ends: 23721 [2022-01-18 02:54:09,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 4989 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2824, Invalid=18342, Unknown=8, NotChecked=288, Total=21462 [2022-01-18 02:54:09,168 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 2338 mSDsluCounter, 9118 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 9044 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 763 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:09,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 9044 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2037 Invalid, 0 Unknown, 763 Unchecked, 0.9s Time] [2022-01-18 02:54:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23721 states. [2022-01-18 02:54:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23721 to 12589. [2022-01-18 02:54:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12589 states, 12588 states have (on average 2.951620591039085) internal successors, (37155), 12588 states have internal predecessors, (37155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12589 states to 12589 states and 37155 transitions. [2022-01-18 02:54:09,484 INFO L78 Accepts]: Start accepts. Automaton has 12589 states and 37155 transitions. Word has length 126 [2022-01-18 02:54:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:09,485 INFO L470 AbstractCegarLoop]: Abstraction has 12589 states and 37155 transitions. [2022-01-18 02:54:09,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 12589 states and 37155 transitions. [2022-01-18 02:54:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:54:09,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:09,504 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:09,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-01-18 02:54:09,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 02:54:09,704 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1680010080, now seen corresponding path program 21 times [2022-01-18 02:54:09,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:09,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457540635] [2022-01-18 02:54:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:09,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:10,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:10,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457540635] [2022-01-18 02:54:10,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457540635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:10,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584095901] [2022-01-18 02:54:10,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:54:10,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:10,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:10,157 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:10,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 02:54:10,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:54:10,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:10,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:54:10,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:10,819 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:54:10,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:54:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:54:10,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:11,093 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:54:11,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:54:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:54:11,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584095901] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:11,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:11,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 11] total 38 [2022-01-18 02:54:11,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599016648] [2022-01-18 02:54:11,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:11,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:54:11,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:11,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:54:11,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:54:11,407 INFO L87 Difference]: Start difference. First operand 12589 states and 37155 transitions. Second operand has 38 states, 38 states have (on average 7.157894736842105) internal successors, (272), 38 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:13,610 INFO L93 Difference]: Finished difference Result 26034 states and 74315 transitions. [2022-01-18 02:54:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 02:54:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.157894736842105) internal successors, (272), 38 states have internal predecessors, (272), 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 126 [2022-01-18 02:54:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:13,667 INFO L225 Difference]: With dead ends: 26034 [2022-01-18 02:54:13,667 INFO L226 Difference]: Without dead ends: 25966 [2022-01-18 02:54:13,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1086, Invalid=6224, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 02:54:13,668 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1146 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 439 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:13,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 4031 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 546 Invalid, 0 Unknown, 439 Unchecked, 0.2s Time] [2022-01-18 02:54:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25966 states. [2022-01-18 02:54:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25966 to 16844. [2022-01-18 02:54:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16844 states, 16843 states have (on average 2.985928872528647) internal successors, (50292), 16843 states have internal predecessors, (50292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16844 states to 16844 states and 50292 transitions. [2022-01-18 02:54:14,040 INFO L78 Accepts]: Start accepts. Automaton has 16844 states and 50292 transitions. Word has length 126 [2022-01-18 02:54:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:14,040 INFO L470 AbstractCegarLoop]: Abstraction has 16844 states and 50292 transitions. [2022-01-18 02:54:14,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.157894736842105) internal successors, (272), 38 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 16844 states and 50292 transitions. [2022-01-18 02:54:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:54:14,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:14,063 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:14,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:14,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 02:54:14,265 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 900922370, now seen corresponding path program 22 times [2022-01-18 02:54:14,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:14,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056777879] [2022-01-18 02:54:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:14,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:14,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:14,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056777879] [2022-01-18 02:54:14,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056777879] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:14,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159778527] [2022-01-18 02:54:14,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:54:14,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:14,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:14,779 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:14,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 02:54:14,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:54:14,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:14,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-18 02:54:14,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:15,824 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:54:15,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:54:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:15,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:15,934 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:54:15,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:54:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:17,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159778527] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:17,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:17,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 57 [2022-01-18 02:54:17,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819867752] [2022-01-18 02:54:17,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:17,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-18 02:54:17,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-18 02:54:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2815, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:54:17,291 INFO L87 Difference]: Start difference. First operand 16844 states and 50292 transitions. Second operand has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:21,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:21,720 INFO L93 Difference]: Finished difference Result 14963 states and 39399 transitions. [2022-01-18 02:54:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 02:54:21,721 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 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 126 [2022-01-18 02:54:21,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:21,741 INFO L225 Difference]: With dead ends: 14963 [2022-01-18 02:54:21,741 INFO L226 Difference]: Without dead ends: 13125 [2022-01-18 02:54:21,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5583 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2558, Invalid=17182, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 02:54:21,742 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 2125 mSDsluCounter, 7285 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 6950 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 6950 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1889 Invalid, 0 Unknown, 574 Unchecked, 0.9s Time] [2022-01-18 02:54:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13125 states. [2022-01-18 02:54:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 5235. [2022-01-18 02:54:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 2.6799770729843333) internal successors, (14027), 5234 states have internal predecessors, (14027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 14027 transitions. [2022-01-18 02:54:21,854 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 14027 transitions. Word has length 126 [2022-01-18 02:54:21,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:21,855 INFO L470 AbstractCegarLoop]: Abstraction has 5235 states and 14027 transitions. [2022-01-18 02:54:21,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 14027 transitions. [2022-01-18 02:54:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:54:21,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:21,860 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:21,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:22,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 02:54:22,061 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2143719924, now seen corresponding path program 23 times [2022-01-18 02:54:22,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:22,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630892890] [2022-01-18 02:54:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:22,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:22,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:22,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630892890] [2022-01-18 02:54:22,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630892890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:22,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827508806] [2022-01-18 02:54:22,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:54:22,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:22,503 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:22,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 02:54:22,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:54:22,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:22,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 02:54:22,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:23,547 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:54:23,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:54:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:23,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:23,659 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:54:23,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:54:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:25,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827508806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:25,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:25,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 57 [2022-01-18 02:54:25,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019705122] [2022-01-18 02:54:25,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:25,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-18 02:54:25,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-18 02:54:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2815, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:54:25,046 INFO L87 Difference]: Start difference. First operand 5235 states and 14027 transitions. Second operand has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:30,311 INFO L93 Difference]: Finished difference Result 12657 states and 32986 transitions. [2022-01-18 02:54:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 02:54:30,312 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 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 126 [2022-01-18 02:54:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:30,328 INFO L225 Difference]: With dead ends: 12657 [2022-01-18 02:54:30,328 INFO L226 Difference]: Without dead ends: 10837 [2022-01-18 02:54:30,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 217 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6983 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3005, Invalid=20251, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 02:54:30,330 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 2319 mSDsluCounter, 7528 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 7056 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 818 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:30,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 7056 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2214 Invalid, 0 Unknown, 818 Unchecked, 1.0s Time] [2022-01-18 02:54:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2022-01-18 02:54:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 4746. [2022-01-18 02:54:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4746 states, 4745 states have (on average 2.6552160168598524) internal successors, (12599), 4745 states have internal predecessors, (12599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4746 states to 4746 states and 12599 transitions. [2022-01-18 02:54:30,421 INFO L78 Accepts]: Start accepts. Automaton has 4746 states and 12599 transitions. Word has length 126 [2022-01-18 02:54:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:30,421 INFO L470 AbstractCegarLoop]: Abstraction has 4746 states and 12599 transitions. [2022-01-18 02:54:30,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4746 states and 12599 transitions. [2022-01-18 02:54:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:54:30,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:30,427 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:30,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:30,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:30,627 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 932217430, now seen corresponding path program 24 times [2022-01-18 02:54:30,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:30,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89751206] [2022-01-18 02:54:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:30,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:31,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89751206] [2022-01-18 02:54:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89751206] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003458380] [2022-01-18 02:54:31,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:54:31,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:31,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:31,161 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:31,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 02:54:31,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:54:31,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:31,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-18 02:54:31,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:32,210 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:54:32,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:54:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:54:32,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:32,290 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:54:32,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:54:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:54:33,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003458380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:33,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:33,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 20] total 57 [2022-01-18 02:54:33,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791612122] [2022-01-18 02:54:33,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:33,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-18 02:54:33,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-18 02:54:33,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2819, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:54:33,344 INFO L87 Difference]: Start difference. First operand 4746 states and 12599 transitions. Second operand has 57 states, 57 states have (on average 5.192982456140351) internal successors, (296), 57 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:35,944 INFO L93 Difference]: Finished difference Result 8241 states and 21317 transitions. [2022-01-18 02:54:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:54:35,944 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.192982456140351) internal successors, (296), 57 states have internal predecessors, (296), 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 126 [2022-01-18 02:54:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:35,955 INFO L225 Difference]: With dead ends: 8241 [2022-01-18 02:54:35,955 INFO L226 Difference]: Without dead ends: 7588 [2022-01-18 02:54:35,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1717, Invalid=9413, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 02:54:35,957 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1790 mSDsluCounter, 5785 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:35,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1790 Valid, 5587 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1714 Invalid, 0 Unknown, 188 Unchecked, 0.7s Time] [2022-01-18 02:54:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2022-01-18 02:54:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 4852. [2022-01-18 02:54:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 2.645227788084931) internal successors, (12832), 4851 states have internal predecessors, (12832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 12832 transitions. [2022-01-18 02:54:36,026 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 12832 transitions. Word has length 126 [2022-01-18 02:54:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:36,027 INFO L470 AbstractCegarLoop]: Abstraction has 4852 states and 12832 transitions. [2022-01-18 02:54:36,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.192982456140351) internal successors, (296), 57 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 12832 transitions. [2022-01-18 02:54:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-18 02:54:36,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:36,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:36,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:36,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 02:54:36,252 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1671573708, now seen corresponding path program 25 times [2022-01-18 02:54:36,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:36,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313885092] [2022-01-18 02:54:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:36,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:36,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:36,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313885092] [2022-01-18 02:54:36,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313885092] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:36,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699723590] [2022-01-18 02:54:36,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:54:36,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:36,708 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:36,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 02:54:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:36,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 02:54:36,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:37,773 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:54:37,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:54:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:37,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:37,929 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:54:37,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:54:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:39,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699723590] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:39,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:39,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 57 [2022-01-18 02:54:39,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133353299] [2022-01-18 02:54:39,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:39,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-18 02:54:39,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-18 02:54:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=2838, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:54:39,168 INFO L87 Difference]: Start difference. First operand 4852 states and 12832 transitions. Second operand has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:41,884 INFO L93 Difference]: Finished difference Result 6757 states and 17432 transitions. [2022-01-18 02:54:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:54:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 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 126 [2022-01-18 02:54:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:41,894 INFO L225 Difference]: With dead ends: 6757 [2022-01-18 02:54:41,894 INFO L226 Difference]: Without dead ends: 6734 [2022-01-18 02:54:41,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3064 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1665, Invalid=10767, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 02:54:41,896 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 1310 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 554 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:41,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 3840 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 968 Invalid, 0 Unknown, 554 Unchecked, 0.4s Time] [2022-01-18 02:54:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2022-01-18 02:54:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 4885. [2022-01-18 02:54:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 4884 states have (on average 2.640868140868141) internal successors, (12898), 4884 states have internal predecessors, (12898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 12898 transitions. [2022-01-18 02:54:42,004 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 12898 transitions. Word has length 126 [2022-01-18 02:54:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:42,005 INFO L470 AbstractCegarLoop]: Abstraction has 4885 states and 12898 transitions. [2022-01-18 02:54:42,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.228070175438597) internal successors, (298), 57 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 12898 transitions. [2022-01-18 02:54:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-18 02:54:42,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:42,010 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:42,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:42,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 02:54:42,223 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 726000224, now seen corresponding path program 26 times [2022-01-18 02:54:42,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:42,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791176066] [2022-01-18 02:54:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:42,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:54:42,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:42,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791176066] [2022-01-18 02:54:42,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791176066] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:42,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836217167] [2022-01-18 02:54:42,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:54:42,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:42,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:42,269 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:42,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 02:54:42,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:54:42,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:42,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:54:42,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:54:42,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:54:42,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836217167] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:42,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:42,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 9] total 13 [2022-01-18 02:54:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536459767] [2022-01-18 02:54:42,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:42,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 02:54:42,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 02:54:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-18 02:54:42,889 INFO L87 Difference]: Start difference. First operand 4885 states and 12898 transitions. Second operand has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:42,948 INFO L93 Difference]: Finished difference Result 6751 states and 17656 transitions. [2022-01-18 02:54:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 02:54:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 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 129 [2022-01-18 02:54:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:42,955 INFO L225 Difference]: With dead ends: 6751 [2022-01-18 02:54:42,956 INFO L226 Difference]: Without dead ends: 5389 [2022-01-18 02:54:42,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:54:42,956 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 537 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:42,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 459 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:54:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2022-01-18 02:54:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 3186. [2022-01-18 02:54:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 2.647409733124019) internal successors, (8432), 3185 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 8432 transitions. [2022-01-18 02:54:42,998 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 8432 transitions. Word has length 129 [2022-01-18 02:54:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:42,998 INFO L470 AbstractCegarLoop]: Abstraction has 3186 states and 8432 transitions. [2022-01-18 02:54:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 8432 transitions. [2022-01-18 02:54:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 02:54:43,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:43,002 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:43,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:43,202 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 151097892, now seen corresponding path program 27 times [2022-01-18 02:54:43,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022334253] [2022-01-18 02:54:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:43,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 02:54:43,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:43,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022334253] [2022-01-18 02:54:43,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022334253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:43,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692477455] [2022-01-18 02:54:43,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:54:43,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:43,312 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:43,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 02:54:43,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:54:43,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:43,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 02:54:43,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:44,016 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 02:54:44,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2022-01-18 02:54:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:54:44,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:44,311 INFO L353 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-01-18 02:54:44,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 28 [2022-01-18 02:54:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:54:44,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692477455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:44,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:44,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 40 [2022-01-18 02:54:44,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651437032] [2022-01-18 02:54:44,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:44,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:54:44,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:54:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1331, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:54:44,635 INFO L87 Difference]: Start difference. First operand 3186 states and 8432 transitions. Second operand has 40 states, 40 states have (on average 6.2) internal successors, (248), 40 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:45,420 INFO L93 Difference]: Finished difference Result 3845 states and 9940 transitions. [2022-01-18 02:54:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 02:54:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.2) internal successors, (248), 40 states have internal predecessors, (248), 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 132 [2022-01-18 02:54:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:45,425 INFO L225 Difference]: With dead ends: 3845 [2022-01-18 02:54:45,425 INFO L226 Difference]: Without dead ends: 3209 [2022-01-18 02:54:45,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1061, Invalid=4639, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 02:54:45,426 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 1040 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 477 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:45,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2102 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 400 Invalid, 0 Unknown, 477 Unchecked, 0.2s Time] [2022-01-18 02:54:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-01-18 02:54:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2807. [2022-01-18 02:54:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 2.64183891660727) internal successors, (7413), 2806 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 7413 transitions. [2022-01-18 02:54:45,457 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 7413 transitions. Word has length 132 [2022-01-18 02:54:45,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:45,457 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 7413 transitions. [2022-01-18 02:54:45,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.2) internal successors, (248), 40 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 7413 transitions. [2022-01-18 02:54:45,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 02:54:45,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:45,460 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:45,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:45,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:45,660 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -692715726, now seen corresponding path program 28 times [2022-01-18 02:54:45,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:45,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462469966] [2022-01-18 02:54:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:45,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 02:54:45,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:45,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462469966] [2022-01-18 02:54:45,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462469966] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:45,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047213997] [2022-01-18 02:54:45,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:54:45,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:45,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:45,793 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:45,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 02:54:45,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:54:45,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:45,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:54:45,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 02:54:46,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 02:54:46,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047213997] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:46,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:46,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 02:54:46,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797552983] [2022-01-18 02:54:46,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:46,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:54:46,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:54:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:54:46,698 INFO L87 Difference]: Start difference. First operand 2807 states and 7413 transitions. Second operand has 37 states, 37 states have (on average 6.486486486486487) internal successors, (240), 37 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:47,013 INFO L93 Difference]: Finished difference Result 2720 states and 7191 transitions. [2022-01-18 02:54:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 02:54:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.486486486486487) internal successors, (240), 37 states have internal predecessors, (240), 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 132 [2022-01-18 02:54:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:47,021 INFO L225 Difference]: With dead ends: 2720 [2022-01-18 02:54:47,021 INFO L226 Difference]: Without dead ends: 2486 [2022-01-18 02:54:47,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=2269, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 02:54:47,022 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 448 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1200 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:54:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2022-01-18 02:54:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2481. [2022-01-18 02:54:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2480 states have (on average 2.692741935483871) internal successors, (6678), 2480 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 6678 transitions. [2022-01-18 02:54:47,055 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 6678 transitions. Word has length 132 [2022-01-18 02:54:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:47,055 INFO L470 AbstractCegarLoop]: Abstraction has 2481 states and 6678 transitions. [2022-01-18 02:54:47,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.486486486486487) internal successors, (240), 37 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 6678 transitions. [2022-01-18 02:54:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 02:54:47,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:47,058 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:47,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:47,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:47,277 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:47,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:47,278 INFO L85 PathProgramCache]: Analyzing trace with hash 920997529, now seen corresponding path program 29 times [2022-01-18 02:54:47,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:47,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424131169] [2022-01-18 02:54:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:47,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:48,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424131169] [2022-01-18 02:54:48,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424131169] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120012833] [2022-01-18 02:54:48,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:54:48,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:48,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:48,290 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:48,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 02:54:48,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:54:48,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:48,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-18 02:54:48,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:48,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:54:48,550 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:54:48,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:54:49,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:54:49,246 INFO L387 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 23 treesize of output 7 [2022-01-18 02:54:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:54:49,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:49,313 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_960 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_960) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-01-18 02:54:49,335 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:54:49,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:54:49,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:54:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 46 trivial. 3 not checked. [2022-01-18 02:54:49,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120012833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:49,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 18] total 53 [2022-01-18 02:54:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064058202] [2022-01-18 02:54:49,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:49,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 02:54:49,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 02:54:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2498, Unknown=1, NotChecked=100, Total=2756 [2022-01-18 02:54:49,873 INFO L87 Difference]: Start difference. First operand 2481 states and 6678 transitions. Second operand has 53 states, 53 states have (on average 5.132075471698113) internal successors, (272), 53 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:53,812 INFO L93 Difference]: Finished difference Result 12214 states and 32961 transitions. [2022-01-18 02:54:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:54:53,812 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.132075471698113) internal successors, (272), 53 states have internal predecessors, (272), 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 133 [2022-01-18 02:54:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:53,826 INFO L225 Difference]: With dead ends: 12214 [2022-01-18 02:54:53,826 INFO L226 Difference]: Without dead ends: 8791 [2022-01-18 02:54:53,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 240 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 3286 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1478, Invalid=12567, Unknown=1, NotChecked=234, Total=14280 [2022-01-18 02:54:53,828 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 2270 mSDsluCounter, 5715 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 5288 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 540 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:53,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2270 Valid, 5288 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2404 Invalid, 0 Unknown, 540 Unchecked, 1.0s Time] [2022-01-18 02:54:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8791 states. [2022-01-18 02:54:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8791 to 2910. [2022-01-18 02:54:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 2.679271227225851) internal successors, (7794), 2909 states have internal predecessors, (7794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 7794 transitions. [2022-01-18 02:54:53,886 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 7794 transitions. Word has length 133 [2022-01-18 02:54:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:53,886 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 7794 transitions. [2022-01-18 02:54:53,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.132075471698113) internal successors, (272), 53 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 7794 transitions. [2022-01-18 02:54:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:54:53,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:53,889 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:53,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:54,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:54,090 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:54,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2010186831, now seen corresponding path program 30 times [2022-01-18 02:54:54,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:54,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699509873] [2022-01-18 02:54:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:54,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:54,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699509873] [2022-01-18 02:54:54,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699509873] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695973066] [2022-01-18 02:54:54,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:54:54,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:54,790 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:54,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 02:54:55,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:54:55,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:55,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 02:54:55,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:54:56,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:54:56,714 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:54:56,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:54:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:54:56,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:57,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:54:57,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:54:57,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:54:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:54:59,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695973066] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:59,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:59,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 30] total 82 [2022-01-18 02:54:59,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877825157] [2022-01-18 02:54:59,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:59,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-18 02:54:59,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-18 02:54:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=6109, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:54:59,431 INFO L87 Difference]: Start difference. First operand 2910 states and 7794 transitions. Second operand has 82 states, 82 states have (on average 4.2073170731707314) internal successors, (345), 82 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:55:04,637 INFO L93 Difference]: Finished difference Result 12357 states and 32885 transitions. [2022-01-18 02:55:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 02:55:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.2073170731707314) internal successors, (345), 82 states have internal predecessors, (345), 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 139 [2022-01-18 02:55:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:55:04,664 INFO L225 Difference]: With dead ends: 12357 [2022-01-18 02:55:04,664 INFO L226 Difference]: Without dead ends: 12301 [2022-01-18 02:55:04,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 241 SyntacticMatches, 6 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4743 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2375, Invalid=15447, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 02:55:04,665 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2941 mSDsluCounter, 6518 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 6598 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 966 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:55:04,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2941 Valid, 6598 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1154 Invalid, 0 Unknown, 966 Unchecked, 0.6s Time] [2022-01-18 02:55:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2022-01-18 02:55:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 5970. [2022-01-18 02:55:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 2.7684704305578824) internal successors, (16525), 5969 states have internal predecessors, (16525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 16525 transitions. [2022-01-18 02:55:04,820 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 16525 transitions. Word has length 139 [2022-01-18 02:55:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:55:04,820 INFO L470 AbstractCegarLoop]: Abstraction has 5970 states and 16525 transitions. [2022-01-18 02:55:04,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.2073170731707314) internal successors, (345), 82 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 16525 transitions. [2022-01-18 02:55:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:55:04,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:55:04,828 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:55:04,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 02:55:05,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 02:55:05,044 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:55:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:55:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash -583514407, now seen corresponding path program 31 times [2022-01-18 02:55:05,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:55:05,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068959997] [2022-01-18 02:55:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:55:05,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:55:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:05,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:55:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068959997] [2022-01-18 02:55:05,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068959997] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:55:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574007300] [2022-01-18 02:55:05,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:55:05,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:55:05,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:55:05,732 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:55:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 02:55:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:05,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 02:55:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:55:05,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:55:06,040 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:55:06,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:55:07,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:55:07,590 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:55:07,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:55:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:07,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:55:07,851 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1035 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1035) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)) 5)) is different from false [2022-01-18 02:55:07,876 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:55:07,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:55:07,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:55:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-18 02:55:10,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574007300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:55:10,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:55:10,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 84 [2022-01-18 02:55:10,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60201967] [2022-01-18 02:55:10,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:55:10,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-18 02:55:10,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:55:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-18 02:55:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6290, Unknown=1, NotChecked=162, Total=6972 [2022-01-18 02:55:10,764 INFO L87 Difference]: Start difference. First operand 5970 states and 16525 transitions. Second operand has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:55:22,807 INFO L93 Difference]: Finished difference Result 31879 states and 88730 transitions. [2022-01-18 02:55:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 02:55:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 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 139 [2022-01-18 02:55:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:55:22,899 INFO L225 Difference]: With dead ends: 31879 [2022-01-18 02:55:22,899 INFO L226 Difference]: Without dead ends: 31841 [2022-01-18 02:55:22,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 269 SyntacticMatches, 9 SemanticMatches, 207 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 11471 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=5372, Invalid=37667, Unknown=21, NotChecked=412, Total=43472 [2022-01-18 02:55:22,901 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 2428 mSDsluCounter, 30274 mSDsCounter, 0 mSdLazyCounter, 5301 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 30636 SdHoareTripleChecker+Invalid, 7646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 5301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2091 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:55:22,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2428 Valid, 30636 Invalid, 7646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 5301 Invalid, 0 Unknown, 2091 Unchecked, 2.2s Time] [2022-01-18 02:55:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31841 states. [2022-01-18 02:55:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31841 to 11488. [2022-01-18 02:55:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11488 states, 11487 states have (on average 2.927570296857317) internal successors, (33629), 11487 states have internal predecessors, (33629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11488 states to 11488 states and 33629 transitions. [2022-01-18 02:55:23,149 INFO L78 Accepts]: Start accepts. Automaton has 11488 states and 33629 transitions. Word has length 139 [2022-01-18 02:55:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:55:23,149 INFO L470 AbstractCegarLoop]: Abstraction has 11488 states and 33629 transitions. [2022-01-18 02:55:23,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 11488 states and 33629 transitions. [2022-01-18 02:55:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:55:23,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:55:23,163 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:55:23,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 02:55:23,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:55:23,364 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:55:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:55:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1892229263, now seen corresponding path program 32 times [2022-01-18 02:55:23,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:55:23,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929720212] [2022-01-18 02:55:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:55:23,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:55:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:24,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:55:24,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929720212] [2022-01-18 02:55:24,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929720212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:55:24,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585751808] [2022-01-18 02:55:24,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:55:24,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:55:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:55:24,024 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:55:24,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 02:55:24,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:55:24,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:55:24,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 02:55:24,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:55:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:55:25,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:55:25,608 INFO L387 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 23 treesize of output 7 [2022-01-18 02:55:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:25,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:55:25,811 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1072 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1072) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)) 5)) is different from false [2022-01-18 02:55:25,868 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:55:25,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:55:25,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:55:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-18 02:55:27,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585751808] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:55:27,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:55:27,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 86 [2022-01-18 02:55:27,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222407020] [2022-01-18 02:55:27,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:55:27,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:55:27,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:55:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:55:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=6610, Unknown=1, NotChecked=166, Total=7310 [2022-01-18 02:55:27,649 INFO L87 Difference]: Start difference. First operand 11488 states and 33629 transitions. Second operand has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:01,558 INFO L93 Difference]: Finished difference Result 75019 states and 210865 transitions. [2022-01-18 02:56:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2022-01-18 02:56:01,559 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 states have internal predecessors, (355), 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 139 [2022-01-18 02:56:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:01,755 INFO L225 Difference]: With dead ends: 75019 [2022-01-18 02:56:01,755 INFO L226 Difference]: Without dead ends: 68491 [2022-01-18 02:56:01,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 383 ConstructedPredicates, 1 IntricatePredicates, 23 DeprecatedPredicates, 49301 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=20976, Invalid=126088, Unknown=12, NotChecked=764, Total=147840 [2022-01-18 02:56:01,762 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 6692 mSDsluCounter, 48388 mSDsCounter, 0 mSdLazyCounter, 13649 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6692 SdHoareTripleChecker+Valid, 44719 SdHoareTripleChecker+Invalid, 15932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 13649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1585 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:01,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6692 Valid, 44719 Invalid, 15932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [698 Valid, 13649 Invalid, 0 Unknown, 1585 Unchecked, 6.0s Time] [2022-01-18 02:56:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68491 states. [2022-01-18 02:56:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68491 to 21158. [2022-01-18 02:56:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21158 states, 21157 states have (on average 3.060405539537742) internal successors, (64749), 21157 states have internal predecessors, (64749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21158 states to 21158 states and 64749 transitions. [2022-01-18 02:56:03,044 INFO L78 Accepts]: Start accepts. Automaton has 21158 states and 64749 transitions. Word has length 139 [2022-01-18 02:56:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:03,044 INFO L470 AbstractCegarLoop]: Abstraction has 21158 states and 64749 transitions. [2022-01-18 02:56:03,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:03,044 INFO L276 IsEmpty]: Start isEmpty. Operand 21158 states and 64749 transitions. [2022-01-18 02:56:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:56:03,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:03,069 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:03,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 02:56:03,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:03,269 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1468962555, now seen corresponding path program 33 times [2022-01-18 02:56:03,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:03,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202122272] [2022-01-18 02:56:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:03,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:03,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:03,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202122272] [2022-01-18 02:56:03,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202122272] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:03,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690066583] [2022-01-18 02:56:03,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:56:03,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:03,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:03,876 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:03,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 02:56:04,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:56:04,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:56:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 02:56:04,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:05,356 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:56:05,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:56:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 02:56:05,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:05,662 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:56:05,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:56:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 02:56:06,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690066583] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:06,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:06,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 21] total 61 [2022-01-18 02:56:06,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833309194] [2022-01-18 02:56:06,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:06,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-18 02:56:06,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-18 02:56:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3216, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 02:56:06,198 INFO L87 Difference]: Start difference. First operand 21158 states and 64749 transitions. Second operand has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:10,629 INFO L93 Difference]: Finished difference Result 39982 states and 113751 transitions. [2022-01-18 02:56:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:56:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 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 139 [2022-01-18 02:56:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:10,720 INFO L225 Difference]: With dead ends: 39982 [2022-01-18 02:56:10,720 INFO L226 Difference]: Without dead ends: 38893 [2022-01-18 02:56:10,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 5702 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3283, Invalid=18473, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 02:56:10,721 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 2124 mSDsluCounter, 6982 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 6906 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 724 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:10,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2124 Valid, 6906 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1034 Invalid, 0 Unknown, 724 Unchecked, 0.4s Time] [2022-01-18 02:56:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38893 states. [2022-01-18 02:56:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38893 to 21238. [2022-01-18 02:56:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21238 states, 21237 states have (on average 3.126712812544145) internal successors, (66402), 21237 states have internal predecessors, (66402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21238 states to 21238 states and 66402 transitions. [2022-01-18 02:56:11,241 INFO L78 Accepts]: Start accepts. Automaton has 21238 states and 66402 transitions. Word has length 139 [2022-01-18 02:56:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:11,242 INFO L470 AbstractCegarLoop]: Abstraction has 21238 states and 66402 transitions. [2022-01-18 02:56:11,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 21238 states and 66402 transitions. [2022-01-18 02:56:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:56:11,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:11,268 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:11,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:11,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 02:56:11,469 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash -350261071, now seen corresponding path program 34 times [2022-01-18 02:56:11,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:11,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925834234] [2022-01-18 02:56:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:11,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:12,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925834234] [2022-01-18 02:56:12,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925834234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587792282] [2022-01-18 02:56:12,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:56:12,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:12,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:12,018 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:12,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 02:56:12,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:56:12,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:56:12,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 02:56:12,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:13,391 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:56:13,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:56:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:13,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:13,540 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:56:13,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:56:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:15,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587792282] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:15,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:15,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-01-18 02:56:15,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376697558] [2022-01-18 02:56:15,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:15,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-18 02:56:15,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-18 02:56:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=4163, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:56:15,147 INFO L87 Difference]: Start difference. First operand 21238 states and 66402 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:24,527 INFO L93 Difference]: Finished difference Result 28524 states and 76592 transitions. [2022-01-18 02:56:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-18 02:56:24,528 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 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 139 [2022-01-18 02:56:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:24,567 INFO L225 Difference]: With dead ends: 28524 [2022-01-18 02:56:24,567 INFO L226 Difference]: Without dead ends: 22914 [2022-01-18 02:56:24,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13010 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=5583, Invalid=37889, Unknown=0, NotChecked=0, Total=43472 [2022-01-18 02:56:24,570 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 2665 mSDsluCounter, 13373 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 12721 SdHoareTripleChecker+Invalid, 4463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 488 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:24,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2665 Valid, 12721 Invalid, 4463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3813 Invalid, 0 Unknown, 488 Unchecked, 1.6s Time] [2022-01-18 02:56:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22914 states. [2022-01-18 02:56:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22914 to 11037. [2022-01-18 02:56:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11037 states, 11036 states have (on average 2.7479159115621603) internal successors, (30326), 11036 states have internal predecessors, (30326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11037 states to 11037 states and 30326 transitions. [2022-01-18 02:56:24,874 INFO L78 Accepts]: Start accepts. Automaton has 11037 states and 30326 transitions. Word has length 139 [2022-01-18 02:56:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:24,874 INFO L470 AbstractCegarLoop]: Abstraction has 11037 states and 30326 transitions. [2022-01-18 02:56:24,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 11037 states and 30326 transitions. [2022-01-18 02:56:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:56:24,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:24,888 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:24,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:25,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 02:56:25,089 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:25,089 INFO L85 PathProgramCache]: Analyzing trace with hash 900063931, now seen corresponding path program 35 times [2022-01-18 02:56:25,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:25,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614565800] [2022-01-18 02:56:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:25,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:25,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:25,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614565800] [2022-01-18 02:56:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614565800] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:25,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252459702] [2022-01-18 02:56:25,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:56:25,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:25,720 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:25,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 02:56:25,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:56:25,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:56:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 02:56:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:26,617 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:56:26,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:56:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 02:56:26,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:26,762 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:56:26,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:56:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-18 02:56:27,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252459702] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:27,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:27,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 19, 12] total 46 [2022-01-18 02:56:27,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802032220] [2022-01-18 02:56:27,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:27,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:56:27,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:56:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1935, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:56:27,054 INFO L87 Difference]: Start difference. First operand 11037 states and 30326 transitions. Second operand has 46 states, 46 states have (on average 5.565217391304348) internal successors, (256), 46 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:30,891 INFO L93 Difference]: Finished difference Result 21542 states and 57120 transitions. [2022-01-18 02:56:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:56:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.565217391304348) internal successors, (256), 46 states have internal predecessors, (256), 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 139 [2022-01-18 02:56:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:30,925 INFO L225 Difference]: With dead ends: 21542 [2022-01-18 02:56:30,925 INFO L226 Difference]: Without dead ends: 20149 [2022-01-18 02:56:30,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 260 SyntacticMatches, 5 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 3838 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1076, Invalid=12496, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 02:56:30,927 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1250 mSDsluCounter, 9782 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 9388 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:30,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 9388 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3434 Invalid, 0 Unknown, 141 Unchecked, 1.3s Time] [2022-01-18 02:56:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20149 states. [2022-01-18 02:56:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20149 to 12938. [2022-01-18 02:56:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12938 states, 12937 states have (on average 2.7653242637396613) internal successors, (35775), 12937 states have internal predecessors, (35775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12938 states to 12938 states and 35775 transitions. [2022-01-18 02:56:31,172 INFO L78 Accepts]: Start accepts. Automaton has 12938 states and 35775 transitions. Word has length 139 [2022-01-18 02:56:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:31,172 INFO L470 AbstractCegarLoop]: Abstraction has 12938 states and 35775 transitions. [2022-01-18 02:56:31,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.565217391304348) internal successors, (256), 46 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12938 states and 35775 transitions. [2022-01-18 02:56:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:56:31,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:31,190 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:31,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:31,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 02:56:31,390 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1803486843, now seen corresponding path program 36 times [2022-01-18 02:56:31,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:31,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640216133] [2022-01-18 02:56:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:31,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:31,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:31,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640216133] [2022-01-18 02:56:31,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640216133] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:31,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682196506] [2022-01-18 02:56:31,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:56:31,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:31,962 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:31,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 02:56:32,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:56:32,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:56:32,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 02:56:32,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:33,343 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:56:33,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:56:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 02:56:33,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:33,425 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:56:33,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:56:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 02:56:34,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682196506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:34,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:34,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 23] total 66 [2022-01-18 02:56:34,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713051454] [2022-01-18 02:56:34,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:34,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-18 02:56:34,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-18 02:56:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=3815, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:56:34,599 INFO L87 Difference]: Start difference. First operand 12938 states and 35775 transitions. Second operand has 66 states, 66 states have (on average 4.984848484848484) internal successors, (329), 66 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:37,766 INFO L93 Difference]: Finished difference Result 19288 states and 51481 transitions. [2022-01-18 02:56:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 02:56:37,766 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.984848484848484) internal successors, (329), 66 states have internal predecessors, (329), 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 139 [2022-01-18 02:56:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:37,798 INFO L225 Difference]: With dead ends: 19288 [2022-01-18 02:56:37,798 INFO L226 Difference]: Without dead ends: 17411 [2022-01-18 02:56:37,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2474, Invalid=14296, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 02:56:37,800 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 2068 mSDsluCounter, 7519 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 7202 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 632 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:37,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2068 Valid, 7202 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1999 Invalid, 0 Unknown, 632 Unchecked, 0.8s Time] [2022-01-18 02:56:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17411 states. [2022-01-18 02:56:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17411 to 10955. [2022-01-18 02:56:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 10954 states have (on average 2.7439291582983385) internal successors, (30057), 10954 states have internal predecessors, (30057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 30057 transitions. [2022-01-18 02:56:38,063 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 30057 transitions. Word has length 139 [2022-01-18 02:56:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:38,063 INFO L470 AbstractCegarLoop]: Abstraction has 10955 states and 30057 transitions. [2022-01-18 02:56:38,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.984848484848484) internal successors, (329), 66 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 30057 transitions. [2022-01-18 02:56:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-18 02:56:38,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:38,077 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:38,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:38,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 02:56:38,278 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash 131255583, now seen corresponding path program 37 times [2022-01-18 02:56:38,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:38,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497390159] [2022-01-18 02:56:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:38,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:56:38,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497390159] [2022-01-18 02:56:38,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497390159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807298899] [2022-01-18 02:56:38,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:56:38,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:38,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:38,360 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:38,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 02:56:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:56:38,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 56 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:56:39,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 58 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:56:39,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807298899] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:39,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:39,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 20] total 42 [2022-01-18 02:56:39,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105371804] [2022-01-18 02:56:39,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:39,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 02:56:39,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 02:56:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:56:39,994 INFO L87 Difference]: Start difference. First operand 10955 states and 30057 transitions. Second operand has 42 states, 42 states have (on average 7.4523809523809526) internal successors, (313), 42 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:40,825 INFO L93 Difference]: Finished difference Result 16706 states and 43755 transitions. [2022-01-18 02:56:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:56:40,826 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.4523809523809526) internal successors, (313), 42 states have internal predecessors, (313), 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 142 [2022-01-18 02:56:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:40,840 INFO L225 Difference]: With dead ends: 16706 [2022-01-18 02:56:40,840 INFO L226 Difference]: Without dead ends: 9927 [2022-01-18 02:56:40,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1489, Invalid=4673, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:56:40,841 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 1456 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:40,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 1605 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:56:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9927 states. [2022-01-18 02:56:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9927 to 7939. [2022-01-18 02:56:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7939 states, 7938 states have (on average 2.837994457042076) internal successors, (22528), 7938 states have internal predecessors, (22528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 22528 transitions. [2022-01-18 02:56:41,016 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 22528 transitions. Word has length 142 [2022-01-18 02:56:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:41,016 INFO L470 AbstractCegarLoop]: Abstraction has 7939 states and 22528 transitions. [2022-01-18 02:56:41,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.4523809523809526) internal successors, (313), 42 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 22528 transitions. [2022-01-18 02:56:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 02:56:41,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:41,025 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:41,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:41,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:41,226 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:41,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:41,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2118319696, now seen corresponding path program 38 times [2022-01-18 02:56:41,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:41,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011953822] [2022-01-18 02:56:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:41,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:42,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:42,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011953822] [2022-01-18 02:56:42,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011953822] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:42,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588071575] [2022-01-18 02:56:42,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:56:42,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:42,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:42,433 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:42,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 02:56:42,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:56:42,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:56:42,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 02:56:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:43,855 INFO L387 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 23 treesize of output 7 [2022-01-18 02:56:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:43,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:44,102 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:56:44,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:56:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:46,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588071575] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:46,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:46,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27, 27] total 76 [2022-01-18 02:56:46,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952727788] [2022-01-18 02:56:46,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:46,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-18 02:56:46,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-18 02:56:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=4976, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 02:56:46,013 INFO L87 Difference]: Start difference. First operand 7939 states and 22528 transitions. Second operand has 76 states, 76 states have (on average 4.7368421052631575) internal successors, (360), 76 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:06,291 INFO L93 Difference]: Finished difference Result 56392 states and 153467 transitions. [2022-01-18 02:57:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-01-18 02:57:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.7368421052631575) internal successors, (360), 76 states have internal predecessors, (360), 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 146 [2022-01-18 02:57:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:06,389 INFO L225 Difference]: With dead ends: 56392 [2022-01-18 02:57:06,389 INFO L226 Difference]: Without dead ends: 43950 [2022-01-18 02:57:06,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 245 SyntacticMatches, 3 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44128 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=9845, Invalid=107461, Unknown=0, NotChecked=0, Total=117306 [2022-01-18 02:57:06,394 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 4023 mSDsluCounter, 23959 mSDsCounter, 0 mSdLazyCounter, 9533 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4023 SdHoareTripleChecker+Valid, 22406 SdHoareTripleChecker+Invalid, 9947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 9533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:06,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4023 Valid, 22406 Invalid, 9947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 9533 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-01-18 02:57:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43950 states. [2022-01-18 02:57:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43950 to 9988. [2022-01-18 02:57:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9988 states, 9987 states have (on average 2.92900771002303) internal successors, (29252), 9987 states have internal predecessors, (29252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 29252 transitions. [2022-01-18 02:57:06,745 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 29252 transitions. Word has length 146 [2022-01-18 02:57:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:06,745 INFO L470 AbstractCegarLoop]: Abstraction has 9988 states and 29252 transitions. [2022-01-18 02:57:06,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.7368421052631575) internal successors, (360), 76 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 29252 transitions. [2022-01-18 02:57:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 02:57:06,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:06,757 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:06,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:06,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 02:57:06,959 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash 462612754, now seen corresponding path program 39 times [2022-01-18 02:57:06,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:06,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503061061] [2022-01-18 02:57:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:06,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:07,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:07,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503061061] [2022-01-18 02:57:07,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503061061] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:07,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657196259] [2022-01-18 02:57:07,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:57:07,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:07,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:07,758 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:07,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 02:57:08,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:57:08,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:08,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 02:57:08,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:08,670 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:57:08,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:57:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 02:57:08,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:08,855 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:57:08,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:57:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 02:57:09,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657196259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:09,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:09,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 11, 13] total 46 [2022-01-18 02:57:09,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743955832] [2022-01-18 02:57:09,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:09,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:57:09,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:57:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1725, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:57:09,341 INFO L87 Difference]: Start difference. First operand 9988 states and 29252 transitions. Second operand has 46 states, 46 states have (on average 6.608695652173913) internal successors, (304), 46 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:11,349 INFO L93 Difference]: Finished difference Result 16895 states and 48219 transitions. [2022-01-18 02:57:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:57:11,349 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.608695652173913) internal successors, (304), 46 states have internal predecessors, (304), 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 146 [2022-01-18 02:57:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:11,382 INFO L225 Difference]: With dead ends: 16895 [2022-01-18 02:57:11,382 INFO L226 Difference]: Without dead ends: 16858 [2022-01-18 02:57:11,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2447 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1742, Invalid=7764, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:57:11,384 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1139 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:11,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 3398 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 844 Invalid, 0 Unknown, 520 Unchecked, 0.4s Time] [2022-01-18 02:57:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16858 states. [2022-01-18 02:57:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16858 to 12771. [2022-01-18 02:57:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 2.9482380579483163) internal successors, (37649), 12770 states have internal predecessors, (37649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 37649 transitions. [2022-01-18 02:57:11,646 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 37649 transitions. Word has length 146 [2022-01-18 02:57:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:11,646 INFO L470 AbstractCegarLoop]: Abstraction has 12771 states and 37649 transitions. [2022-01-18 02:57:11,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.608695652173913) internal successors, (304), 46 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 37649 transitions. [2022-01-18 02:57:11,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 02:57:11,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:11,662 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:11,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:11,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 02:57:11,862 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2086585160, now seen corresponding path program 40 times [2022-01-18 02:57:11,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:11,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589217497] [2022-01-18 02:57:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:11,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:12,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:12,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589217497] [2022-01-18 02:57:12,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589217497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:12,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902525455] [2022-01-18 02:57:12,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:57:12,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:12,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:12,861 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:12,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 02:57:12,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:57:12,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:12,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 02:57:12,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:14,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:57:14,597 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:57:14,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-01-18 02:57:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:14,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:14,714 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:57:14,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 02:57:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:16,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902525455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:16,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:16,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 27] total 74 [2022-01-18 02:57:16,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397892050] [2022-01-18 02:57:16,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:16,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:57:16,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:57:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=854, Invalid=4548, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:57:16,037 INFO L87 Difference]: Start difference. First operand 12771 states and 37649 transitions. Second operand has 74 states, 74 states have (on average 4.472972972972973) internal successors, (331), 74 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:30,837 INFO L93 Difference]: Finished difference Result 73068 states and 204617 transitions. [2022-01-18 02:57:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2022-01-18 02:57:30,837 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.472972972972973) internal successors, (331), 74 states have internal predecessors, (331), 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 146 [2022-01-18 02:57:30,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:30,987 INFO L225 Difference]: With dead ends: 73068 [2022-01-18 02:57:30,987 INFO L226 Difference]: Without dead ends: 60868 [2022-01-18 02:57:30,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 253 SyntacticMatches, 5 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40263 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=10502, Invalid=92218, Unknown=0, NotChecked=0, Total=102720 [2022-01-18 02:57:30,994 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 5454 mSDsluCounter, 24895 mSDsCounter, 0 mSdLazyCounter, 7985 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5454 SdHoareTripleChecker+Valid, 23108 SdHoareTripleChecker+Invalid, 9975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 7985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1332 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:30,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5454 Valid, 23108 Invalid, 9975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 7985 Invalid, 0 Unknown, 1332 Unchecked, 3.6s Time] [2022-01-18 02:57:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60868 states. [2022-01-18 02:57:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60868 to 18195. [2022-01-18 02:57:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18195 states, 18194 states have (on average 3.0364955479828515) internal successors, (55246), 18194 states have internal predecessors, (55246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18195 states to 18195 states and 55246 transitions. [2022-01-18 02:57:31,708 INFO L78 Accepts]: Start accepts. Automaton has 18195 states and 55246 transitions. Word has length 146 [2022-01-18 02:57:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:31,708 INFO L470 AbstractCegarLoop]: Abstraction has 18195 states and 55246 transitions. [2022-01-18 02:57:31,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.472972972972973) internal successors, (331), 74 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 18195 states and 55246 transitions. [2022-01-18 02:57:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 02:57:31,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:31,732 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:31,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:31,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 02:57:31,947 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1467516042, now seen corresponding path program 41 times [2022-01-18 02:57:31,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:31,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788201365] [2022-01-18 02:57:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:31,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:32,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:32,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788201365] [2022-01-18 02:57:32,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788201365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:32,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192857941] [2022-01-18 02:57:32,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:57:32,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:32,665 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:32,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 02:57:32,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:57:32,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:32,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:57:32,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:33,204 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:57:33,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:57:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-18 02:57:33,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:33,293 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 02:57:33,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 02:57:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-18 02:57:33,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192857941] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:33,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:33,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10, 11] total 42 [2022-01-18 02:57:33,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712453201] [2022-01-18 02:57:33,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:33,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 02:57:33,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 02:57:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:57:33,695 INFO L87 Difference]: Start difference. First operand 18195 states and 55246 transitions. Second operand has 42 states, 42 states have (on average 7.095238095238095) internal successors, (298), 42 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:37,469 INFO L93 Difference]: Finished difference Result 50762 states and 150545 transitions. [2022-01-18 02:57:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 02:57:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.095238095238095) internal successors, (298), 42 states have internal predecessors, (298), 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 146 [2022-01-18 02:57:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:37,623 INFO L225 Difference]: With dead ends: 50762 [2022-01-18 02:57:37,623 INFO L226 Difference]: Without dead ends: 50010 [2022-01-18 02:57:37,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4536 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1893, Invalid=14363, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 02:57:37,624 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 1392 mSDsluCounter, 6558 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 6408 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:37,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 6408 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1904 Invalid, 0 Unknown, 305 Unchecked, 0.8s Time] [2022-01-18 02:57:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50010 states. [2022-01-18 02:57:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50010 to 29817. [2022-01-18 02:57:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29817 states, 29816 states have (on average 3.102562382613362) internal successors, (92506), 29816 states have internal predecessors, (92506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29817 states to 29817 states and 92506 transitions. [2022-01-18 02:57:38,501 INFO L78 Accepts]: Start accepts. Automaton has 29817 states and 92506 transitions. Word has length 146 [2022-01-18 02:57:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:38,502 INFO L470 AbstractCegarLoop]: Abstraction has 29817 states and 92506 transitions. [2022-01-18 02:57:38,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.095238095238095) internal successors, (298), 42 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 29817 states and 92506 transitions. [2022-01-18 02:57:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 02:57:38,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:38,535 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:38,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:38,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:38,736 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1806593374, now seen corresponding path program 42 times [2022-01-18 02:57:38,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:38,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011985575] [2022-01-18 02:57:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:38,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:39,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011985575] [2022-01-18 02:57:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011985575] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949966876] [2022-01-18 02:57:39,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:57:39,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:39,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:39,788 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:39,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 02:57:40,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 02:57:40,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:40,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 02:57:40,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:57:40,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:57:41,088 INFO L387 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 23 treesize of output 7 [2022-01-18 02:57:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:57:41,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:41,183 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1453 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1453) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)) 5)) is different from false [2022-01-18 02:57:41,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:57:41,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:57:41,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:57:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 75 trivial. 4 not checked. [2022-01-18 02:57:41,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949966876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:41,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:41,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 20] total 68 [2022-01-18 02:57:41,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485226354] [2022-01-18 02:57:41,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:41,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-18 02:57:41,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-18 02:57:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=4209, Unknown=1, NotChecked=130, Total=4556 [2022-01-18 02:57:41,930 INFO L87 Difference]: Start difference. First operand 29817 states and 92506 transitions. Second operand has 68 states, 68 states have (on average 4.823529411764706) internal successors, (328), 68 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:47,514 INFO L93 Difference]: Finished difference Result 48657 states and 145541 transitions. [2022-01-18 02:57:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 02:57:47,514 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.823529411764706) internal successors, (328), 68 states have internal predecessors, (328), 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 146 [2022-01-18 02:57:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:47,703 INFO L225 Difference]: With dead ends: 48657 [2022-01-18 02:57:47,703 INFO L226 Difference]: Without dead ends: 41797 [2022-01-18 02:57:47,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2051, Invalid=19708, Unknown=1, NotChecked=292, Total=22052 [2022-01-18 02:57:47,704 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 2815 mSDsluCounter, 8855 mSDsCounter, 0 mSdLazyCounter, 3947 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 8227 SdHoareTripleChecker+Invalid, 4427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:47,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 8227 Invalid, 4427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3947 Invalid, 0 Unknown, 248 Unchecked, 1.5s Time] [2022-01-18 02:57:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41797 states. [2022-01-18 02:57:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41797 to 15845. [2022-01-18 02:57:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15845 states, 15844 states have (on average 3.117962635698056) internal successors, (49401), 15844 states have internal predecessors, (49401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15845 states to 15845 states and 49401 transitions. [2022-01-18 02:57:48,139 INFO L78 Accepts]: Start accepts. Automaton has 15845 states and 49401 transitions. Word has length 146 [2022-01-18 02:57:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:48,139 INFO L470 AbstractCegarLoop]: Abstraction has 15845 states and 49401 transitions. [2022-01-18 02:57:48,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.823529411764706) internal successors, (328), 68 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 15845 states and 49401 transitions. [2022-01-18 02:57:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 02:57:48,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:48,159 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:48,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:48,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:48,360 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 149553678, now seen corresponding path program 43 times [2022-01-18 02:57:48,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:48,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968709133] [2022-01-18 02:57:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:48,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:49,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968709133] [2022-01-18 02:57:49,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968709133] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619074199] [2022-01-18 02:57:49,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:57:49,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:49,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:49,181 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:49,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 02:57:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:49,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 02:57:49,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:51,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:57:51,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:57:51,471 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:57:51,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:57:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:51,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:51,754 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1494 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1494) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-01-18 02:57:51,782 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:57:51,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:57:51,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:57:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-01-18 02:57:53,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619074199] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:53,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:53,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 96 [2022-01-18 02:57:53,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402954475] [2022-01-18 02:57:53,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:53,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-18 02:57:53,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-18 02:57:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=8223, Unknown=1, NotChecked=186, Total=9120 [2022-01-18 02:57:53,962 INFO L87 Difference]: Start difference. First operand 15845 states and 49401 transitions. Second operand has 96 states, 96 states have (on average 4.0) internal successors, (384), 96 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:58:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:58:28,196 INFO L93 Difference]: Finished difference Result 124908 states and 371272 transitions. [2022-01-18 02:58:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2022-01-18 02:58:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.0) internal successors, (384), 96 states have internal predecessors, (384), 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 152 [2022-01-18 02:58:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:58:28,643 INFO L225 Difference]: With dead ends: 124908 [2022-01-18 02:58:28,643 INFO L226 Difference]: Without dead ends: 124898 [2022-01-18 02:58:28,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 250 SyntacticMatches, 7 SemanticMatches, 400 ConstructedPredicates, 1 IntricatePredicates, 34 DeprecatedPredicates, 53698 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=21787, Invalid=138616, Unknown=1, NotChecked=798, Total=161202 [2022-01-18 02:58:28,651 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 5190 mSDsluCounter, 39584 mSDsCounter, 0 mSdLazyCounter, 5387 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 39638 SdHoareTripleChecker+Invalid, 11003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 5387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5000 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:58:28,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 39638 Invalid, 11003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [616 Valid, 5387 Invalid, 0 Unknown, 5000 Unchecked, 2.6s Time] [2022-01-18 02:58:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124898 states. [2022-01-18 02:58:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124898 to 24978. [2022-01-18 02:58:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24978 states, 24977 states have (on average 3.1598270408776075) internal successors, (78923), 24977 states have internal predecessors, (78923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:58:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24978 states to 24978 states and 78923 transitions. [2022-01-18 02:58:30,098 INFO L78 Accepts]: Start accepts. Automaton has 24978 states and 78923 transitions. Word has length 152 [2022-01-18 02:58:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:58:30,098 INFO L470 AbstractCegarLoop]: Abstraction has 24978 states and 78923 transitions. [2022-01-18 02:58:30,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.0) internal successors, (384), 96 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:58:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24978 states and 78923 transitions. [2022-01-18 02:58:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 02:58:30,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:58:30,124 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:58:30,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 02:58:30,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 02:58:30,325 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:58:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:58:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1952594756, now seen corresponding path program 44 times [2022-01-18 02:58:30,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:58:30,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439412769] [2022-01-18 02:58:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:58:30,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:58:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:58:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:58:31,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:58:31,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439412769] [2022-01-18 02:58:31,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439412769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:58:31,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849163144] [2022-01-18 02:58:31,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:58:31,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:58:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:58:31,163 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:58:31,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 02:58:31,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:58:31,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:58:31,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 02:58:31,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:58:33,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:58:33,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:58:33,506 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:58:33,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:58:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:58:33,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:58:34,155 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:58:34,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:58:34,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:58:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:58:37,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849163144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:58:37,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:58:37,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 96 [2022-01-18 02:58:37,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959242461] [2022-01-18 02:58:37,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:58:37,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-18 02:58:37,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:58:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-18 02:58:37,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=8567, Unknown=7, NotChecked=0, Total=9120 [2022-01-18 02:58:37,481 INFO L87 Difference]: Start difference. First operand 24978 states and 78923 transitions. Second operand has 96 states, 96 states have (on average 4.0) internal successors, (384), 96 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:59:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:59:30,704 INFO L93 Difference]: Finished difference Result 62320 states and 173655 transitions. [2022-01-18 02:59:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-18 02:59:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.0) internal successors, (384), 96 states have internal predecessors, (384), 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 152 [2022-01-18 02:59:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:59:30,994 INFO L225 Difference]: With dead ends: 62320 [2022-01-18 02:59:30,994 INFO L226 Difference]: Without dead ends: 62124 [2022-01-18 02:59:30,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 282 SyntacticMatches, 81 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27096 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=6675, Invalid=55557, Unknown=18, NotChecked=0, Total=62250 [2022-01-18 02:59:30,997 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 4969 mSDsluCounter, 17853 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 17792 SdHoareTripleChecker+Invalid, 4203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1327 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:59:30,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 17792 Invalid, 4203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2614 Invalid, 0 Unknown, 1327 Unchecked, 1.2s Time] [2022-01-18 02:59:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62124 states. [2022-01-18 02:59:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62124 to 30930. [2022-01-18 02:59:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30930 states, 30929 states have (on average 2.964951986808497) internal successors, (91703), 30929 states have internal predecessors, (91703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:59:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30930 states to 30930 states and 91703 transitions. [2022-01-18 02:59:31,698 INFO L78 Accepts]: Start accepts. Automaton has 30930 states and 91703 transitions. Word has length 152 [2022-01-18 02:59:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:59:31,698 INFO L470 AbstractCegarLoop]: Abstraction has 30930 states and 91703 transitions. [2022-01-18 02:59:31,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.0) internal successors, (384), 96 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:59:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30930 states and 91703 transitions. [2022-01-18 02:59:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 02:59:31,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:59:31,730 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:59:31,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 02:59:31,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 02:59:31,930 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:59:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:59:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash -641106482, now seen corresponding path program 45 times [2022-01-18 02:59:31,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:59:31,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449923485] [2022-01-18 02:59:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:59:31,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:59:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:59:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:59:32,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:59:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449923485] [2022-01-18 02:59:32,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449923485] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:59:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333873343] [2022-01-18 02:59:32,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:59:32,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:59:32,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:59:32,757 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:59:32,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 02:59:33,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 02:59:33,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:59:33,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 02:59:33,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:59:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:59:33,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:59:34,436 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:59:34,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 02:59:34,454 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 30 proven. 40 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 02:59:34,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:59:35,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:59:35,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-18 02:59:35,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 02:59:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 52 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 02:59:36,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333873343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:59:36,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:59:36,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 22, 22] total 69 [2022-01-18 02:59:36,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965301322] [2022-01-18 02:59:36,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:59:36,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-18 02:59:36,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:59:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-18 02:59:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=4212, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:59:36,356 INFO L87 Difference]: Start difference. First operand 30930 states and 91703 transitions. Second operand has 69 states, 69 states have (on average 4.782608695652174) internal successors, (330), 69 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:59:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:59:41,077 INFO L93 Difference]: Finished difference Result 43643 states and 125103 transitions. [2022-01-18 02:59:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 02:59:41,077 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.782608695652174) internal successors, (330), 69 states have internal predecessors, (330), 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 152 [2022-01-18 02:59:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:59:41,161 INFO L225 Difference]: With dead ends: 43643 [2022-01-18 02:59:41,161 INFO L226 Difference]: Without dead ends: 43579 [2022-01-18 02:59:41,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5679 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2692, Invalid=19064, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 02:59:41,162 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2710 mSDsluCounter, 5262 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1206 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:59:41,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 5180 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 823 Invalid, 0 Unknown, 1206 Unchecked, 0.4s Time] [2022-01-18 02:59:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43579 states. [2022-01-18 02:59:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43579 to 32822. [2022-01-18 02:59:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32822 states, 32821 states have (on average 2.9496663721397884) internal successors, (96811), 32821 states have internal predecessors, (96811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:59:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32822 states to 32822 states and 96811 transitions. [2022-01-18 02:59:41,817 INFO L78 Accepts]: Start accepts. Automaton has 32822 states and 96811 transitions. Word has length 152 [2022-01-18 02:59:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:59:41,817 INFO L470 AbstractCegarLoop]: Abstraction has 32822 states and 96811 transitions. [2022-01-18 02:59:41,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.782608695652174) internal successors, (330), 69 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:59:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 32822 states and 96811 transitions. [2022-01-18 02:59:41,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 02:59:41,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:59:41,854 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:59:41,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 02:59:42,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 02:59:42,055 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:59:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:59:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1834637188, now seen corresponding path program 46 times [2022-01-18 02:59:42,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:59:42,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925318158] [2022-01-18 02:59:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:59:42,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:59:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:59:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:59:42,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:59:42,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925318158] [2022-01-18 02:59:42,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925318158] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:59:42,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572405668] [2022-01-18 02:59:42,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:59:42,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:59:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:59:42,856 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:59:42,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 02:59:42,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:59:42,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:59:42,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 02:59:42,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:59:42,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:59:43,188 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:59:43,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:59:44,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:59:44,786 INFO L387 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 23 treesize of output 7 [2022-01-18 02:59:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:59:44,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:59:45,039 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1618 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1618) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)) 5)) is different from false [2022-01-18 02:59:45,061 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:59:45,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-18 02:59:45,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 02:59:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-01-18 02:59:47,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572405668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:59:47,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:59:47,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 98 [2022-01-18 02:59:47,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118438648] [2022-01-18 02:59:47,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:59:47,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-18 02:59:47,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:59:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-18 02:59:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=8576, Unknown=1, NotChecked=190, Total=9506 [2022-01-18 02:59:47,336 INFO L87 Difference]: Start difference. First operand 32822 states and 96811 transitions. Second operand has 98 states, 98 states have (on average 4.020408163265306) internal successors, (394), 98 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:00:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:00:32,930 INFO L93 Difference]: Finished difference Result 130414 states and 364955 transitions. [2022-01-18 03:00:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 395 states. [2022-01-18 03:00:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.020408163265306) internal successors, (394), 98 states have internal predecessors, (394), 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 152 [2022-01-18 03:00:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:00:33,357 INFO L225 Difference]: With dead ends: 130414 [2022-01-18 03:00:33,357 INFO L226 Difference]: Without dead ends: 119650 [2022-01-18 03:00:33,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 251 SyntacticMatches, 68 SemanticMatches, 483 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 86792 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=32217, Invalid=201558, Unknown=1, NotChecked=964, Total=234740 [2022-01-18 03:00:33,365 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 6671 mSDsluCounter, 75588 mSDsCounter, 0 mSdLazyCounter, 18596 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6671 SdHoareTripleChecker+Valid, 69452 SdHoareTripleChecker+Invalid, 23440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 18596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4246 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:00:33,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6671 Valid, 69452 Invalid, 23440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [598 Valid, 18596 Invalid, 0 Unknown, 4246 Unchecked, 8.0s Time] [2022-01-18 03:00:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119650 states. [2022-01-18 03:00:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119650 to 45651. [2022-01-18 03:00:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45651 states, 45650 states have (on average 3.0058488499452354) internal successors, (137217), 45650 states have internal predecessors, (137217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:00:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45651 states to 45651 states and 137217 transitions. [2022-01-18 03:00:35,244 INFO L78 Accepts]: Start accepts. Automaton has 45651 states and 137217 transitions. Word has length 152 [2022-01-18 03:00:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:00:35,244 INFO L470 AbstractCegarLoop]: Abstraction has 45651 states and 137217 transitions. [2022-01-18 03:00:35,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.020408163265306) internal successors, (394), 98 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:00:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 45651 states and 137217 transitions. [2022-01-18 03:00:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:00:35,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:00:35,285 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:00:35,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 03:00:35,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:00:35,485 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:00:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:00:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -155623454, now seen corresponding path program 47 times [2022-01-18 03:00:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:00:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319080750] [2022-01-18 03:00:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:00:35,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:00:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:00:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:00:36,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:00:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319080750] [2022-01-18 03:00:36,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319080750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:00:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831571390] [2022-01-18 03:00:36,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:00:36,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:00:36,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:00:36,279 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:00:36,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 03:00:36,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 03:00:36,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:00:36,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 03:00:36,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:00:36,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:00:36,518 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-18 03:00:36,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-18 03:00:36,769 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 03:00:36,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-01-18 03:00:37,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 03:00:37,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:00:37,924 INFO L387 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 6 treesize of output 5 [2022-01-18 03:00:38,423 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:00:38,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:00:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 44 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:00:38,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:00:41,110 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:00:41,111 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-01-18 03:00:41,118 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 03:00:41,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 131 [2022-01-18 03:00:41,124 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 03:00:41,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 100 [2022-01-18 03:00:41,130 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 03:00:41,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 67 [2022-01-18 03:00:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:00:42,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831571390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:00:42,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:00:42,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 35] total 96 [2022-01-18 03:00:42,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976081297] [2022-01-18 03:00:42,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:00:42,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-18 03:00:42,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:00:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-18 03:00:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=8105, Unknown=119, NotChecked=0, Total=9120 [2022-01-18 03:00:42,050 INFO L87 Difference]: Start difference. First operand 45651 states and 137217 transitions. Second operand has 96 states, 96 states have (on average 4.03125) internal successors, (387), 96 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:00:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:00:51,090 INFO L93 Difference]: Finished difference Result 63089 states and 177178 transitions. [2022-01-18 03:00:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 03:00:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.03125) internal successors, (387), 96 states have internal predecessors, (387), 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 152 [2022-01-18 03:00:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:00:51,227 INFO L225 Difference]: With dead ends: 63089 [2022-01-18 03:00:51,227 INFO L226 Difference]: Without dead ends: 57568 [2022-01-18 03:00:51,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 277 SyntacticMatches, 5 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8092 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=5484, Invalid=28069, Unknown=119, NotChecked=0, Total=33672 [2022-01-18 03:00:51,228 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 4377 mSDsluCounter, 8652 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 8118 SdHoareTripleChecker+Invalid, 5972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3829 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:00:51,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 8118 Invalid, 5972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1873 Invalid, 0 Unknown, 3829 Unchecked, 0.9s Time] [2022-01-18 03:00:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57568 states. [2022-01-18 03:00:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57568 to 36271. [2022-01-18 03:00:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36271 states, 36270 states have (on average 2.890046870692032) internal successors, (104822), 36270 states have internal predecessors, (104822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:00:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36271 states to 36271 states and 104822 transitions. [2022-01-18 03:00:52,118 INFO L78 Accepts]: Start accepts. Automaton has 36271 states and 104822 transitions. Word has length 152 [2022-01-18 03:00:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:00:52,118 INFO L470 AbstractCegarLoop]: Abstraction has 36271 states and 104822 transitions. [2022-01-18 03:00:52,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.03125) internal successors, (387), 96 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:00:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 36271 states and 104822 transitions. [2022-01-18 03:00:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:00:52,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:00:52,150 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:00:52,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 03:00:52,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:00:52,351 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:00:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:00:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -273581022, now seen corresponding path program 48 times [2022-01-18 03:00:52,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:00:52,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339535147] [2022-01-18 03:00:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:00:52,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:00:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:00:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:00:53,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:00:53,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339535147] [2022-01-18 03:00:53,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339535147] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:00:53,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877173446] [2022-01-18 03:00:53,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:00:53,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:00:53,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:00:53,231 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:00:53,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 03:00:53,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 03:00:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:00:53,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 03:00:53,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:00:54,119 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:00:54,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:00:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 31 proven. 38 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 03:00:54,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:00:54,461 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 03:00:54,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 03:00:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:00:54,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877173446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:00:54,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:00:54,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 14, 15] total 54 [2022-01-18 03:00:54,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265227126] [2022-01-18 03:00:54,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:00:54,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-18 03:00:54,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:00:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-18 03:00:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2506, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:00:54,942 INFO L87 Difference]: Start difference. First operand 36271 states and 104822 transitions. Second operand has 54 states, 54 states have (on average 5.962962962962963) internal successors, (322), 54 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:07,260 INFO L93 Difference]: Finished difference Result 93401 states and 256150 transitions. [2022-01-18 03:01:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-01-18 03:01:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.962962962962963) internal successors, (322), 54 states have internal predecessors, (322), 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 152 [2022-01-18 03:01:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:07,478 INFO L225 Difference]: With dead ends: 93401 [2022-01-18 03:01:07,478 INFO L226 Difference]: Without dead ends: 93261 [2022-01-18 03:01:07,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 14938 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=5115, Invalid=39617, Unknown=0, NotChecked=0, Total=44732 [2022-01-18 03:01:07,482 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 2900 mSDsluCounter, 10365 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 9721 SdHoareTripleChecker+Invalid, 4091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2401 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:07,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2900 Valid, 9721 Invalid, 4091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1595 Invalid, 0 Unknown, 2401 Unchecked, 0.7s Time] [2022-01-18 03:01:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93261 states. [2022-01-18 03:01:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93261 to 44162. [2022-01-18 03:01:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44162 states, 44161 states have (on average 2.879237336111048) internal successors, (127150), 44161 states have internal predecessors, (127150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44162 states to 44162 states and 127150 transitions. [2022-01-18 03:01:09,035 INFO L78 Accepts]: Start accepts. Automaton has 44162 states and 127150 transitions. Word has length 152 [2022-01-18 03:01:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:09,035 INFO L470 AbstractCegarLoop]: Abstraction has 44162 states and 127150 transitions. [2022-01-18 03:01:09,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.962962962962963) internal successors, (322), 54 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 44162 states and 127150 transitions. [2022-01-18 03:01:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:01:09,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:09,091 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:09,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:09,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:09,292 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:09,292 INFO L85 PathProgramCache]: Analyzing trace with hash 976743980, now seen corresponding path program 49 times [2022-01-18 03:01:09,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:09,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520168839] [2022-01-18 03:01:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:09,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:10,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:10,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520168839] [2022-01-18 03:01:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520168839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:10,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418054085] [2022-01-18 03:01:10,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:01:10,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:10,068 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:01:10,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 03:01:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 03:01:10,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:11,754 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:01:11,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:01:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:11,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:11,957 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:01:11,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:01:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:14,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418054085] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:14,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:14,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-01-18 03:01:14,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595515503] [2022-01-18 03:01:14,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:14,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:01:14,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:01:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=5772, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:01:14,229 INFO L87 Difference]: Start difference. First operand 44162 states and 127150 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:25,204 INFO L93 Difference]: Finished difference Result 59390 states and 160280 transitions. [2022-01-18 03:01:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-18 03:01:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 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 152 [2022-01-18 03:01:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:25,312 INFO L225 Difference]: With dead ends: 59390 [2022-01-18 03:01:25,312 INFO L226 Difference]: Without dead ends: 50914 [2022-01-18 03:01:25,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12791 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=5623, Invalid=38687, Unknown=0, NotChecked=0, Total=44310 [2022-01-18 03:01:25,314 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 3095 mSDsluCounter, 19334 mSDsCounter, 0 mSdLazyCounter, 5319 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 18231 SdHoareTripleChecker+Invalid, 6637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 5319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1129 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:25,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3095 Valid, 18231 Invalid, 6637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [189 Valid, 5319 Invalid, 0 Unknown, 1129 Unchecked, 2.4s Time] [2022-01-18 03:01:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50914 states. [2022-01-18 03:01:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50914 to 30194. [2022-01-18 03:01:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30194 states, 30193 states have (on average 2.8083330573311693) internal successors, (84792), 30193 states have internal predecessors, (84792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30194 states to 30194 states and 84792 transitions. [2022-01-18 03:01:26,085 INFO L78 Accepts]: Start accepts. Automaton has 30194 states and 84792 transitions. Word has length 152 [2022-01-18 03:01:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:26,085 INFO L470 AbstractCegarLoop]: Abstraction has 30194 states and 84792 transitions. [2022-01-18 03:01:26,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30194 states and 84792 transitions. [2022-01-18 03:01:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:01:26,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:26,124 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:26,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:26,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-18 03:01:26,324 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1301703774, now seen corresponding path program 50 times [2022-01-18 03:01:26,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:26,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038079977] [2022-01-18 03:01:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:26,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:27,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038079977] [2022-01-18 03:01:27,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038079977] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994064308] [2022-01-18 03:01:27,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:01:27,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:27,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:27,006 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:01:27,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 03:01:27,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:01:27,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:27,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 03:01:27,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:28,710 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:01:28,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:01:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:28,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:29,091 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 03:01:29,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 03:01:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:31,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994064308] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:31,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:31,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-01-18 03:01:31,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125632016] [2022-01-18 03:01:31,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:31,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:01:31,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:01:31,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=5925, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:01:31,616 INFO L87 Difference]: Start difference. First operand 30194 states and 84792 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:10,468 INFO L93 Difference]: Finished difference Result 43233 states and 105710 transitions. [2022-01-18 03:02:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-01-18 03:02:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 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 152 [2022-01-18 03:02:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:10,513 INFO L225 Difference]: With dead ends: 43233 [2022-01-18 03:02:10,513 INFO L226 Difference]: Without dead ends: 25631 [2022-01-18 03:02:10,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 323 SyntacticMatches, 237 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 87696 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=15646, Invalid=107204, Unknown=0, NotChecked=0, Total=122850 [2022-01-18 03:02:10,517 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 3925 mSDsluCounter, 24752 mSDsCounter, 0 mSdLazyCounter, 6079 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 24021 SdHoareTripleChecker+Invalid, 9455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 6079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2962 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:10,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3925 Valid, 24021 Invalid, 9455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 6079 Invalid, 0 Unknown, 2962 Unchecked, 2.7s Time] [2022-01-18 03:02:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25631 states. [2022-01-18 03:02:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25631 to 11190. [2022-01-18 03:02:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11190 states, 11189 states have (on average 2.708910537134686) internal successors, (30310), 11189 states have internal predecessors, (30310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11190 states to 11190 states and 30310 transitions. [2022-01-18 03:02:10,789 INFO L78 Accepts]: Start accepts. Automaton has 11190 states and 30310 transitions. Word has length 152 [2022-01-18 03:02:10,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:10,789 INFO L470 AbstractCegarLoop]: Abstraction has 11190 states and 30310 transitions. [2022-01-18 03:02:10,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 11190 states and 30310 transitions. [2022-01-18 03:02:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:02:10,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:10,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:02:10,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:11,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 03:02:11,003 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:11,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1030084406, now seen corresponding path program 51 times [2022-01-18 03:02:11,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325364901] [2022-01-18 03:02:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:11,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:11,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:11,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325364901] [2022-01-18 03:02:11,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325364901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:11,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268530962] [2022-01-18 03:02:11,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:02:11,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:11,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:11,953 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:11,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 03:02:13,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 03:02:13,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:13,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 03:02:13,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:13,540 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:02:13,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:02:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 36 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 03:02:13,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:13,814 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 03:02:13,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 03:02:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:02:14,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268530962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:14,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:14,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 13, 15] total 52 [2022-01-18 03:02:14,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14261176] [2022-01-18 03:02:14,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 03:02:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 03:02:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:02:14,337 INFO L87 Difference]: Start difference. First operand 11190 states and 30310 transitions. Second operand has 52 states, 52 states have (on average 6.1923076923076925) internal successors, (322), 52 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:19,714 INFO L93 Difference]: Finished difference Result 22284 states and 59302 transitions. [2022-01-18 03:02:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 03:02:19,715 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.1923076923076925) internal successors, (322), 52 states have internal predecessors, (322), 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 152 [2022-01-18 03:02:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:19,745 INFO L225 Difference]: With dead ends: 22284 [2022-01-18 03:02:19,745 INFO L226 Difference]: Without dead ends: 21319 [2022-01-18 03:02:19,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 314 SyntacticMatches, 3 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4791 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2703, Invalid=15387, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 03:02:19,746 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 3502 mSDsluCounter, 7833 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 7438 SdHoareTripleChecker+Invalid, 3717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1987 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:19,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3502 Valid, 7438 Invalid, 3717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1549 Invalid, 0 Unknown, 1987 Unchecked, 0.8s Time] [2022-01-18 03:02:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21319 states. [2022-01-18 03:02:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21319 to 12390. [2022-01-18 03:02:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12390 states, 12389 states have (on average 2.7189442247154734) internal successors, (33685), 12389 states have internal predecessors, (33685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 33685 transitions. [2022-01-18 03:02:19,998 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 33685 transitions. Word has length 152 [2022-01-18 03:02:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:19,998 INFO L470 AbstractCegarLoop]: Abstraction has 12390 states and 33685 transitions. [2022-01-18 03:02:19,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.1923076923076925) internal successors, (322), 52 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 33685 transitions. [2022-01-18 03:02:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:02:20,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:20,016 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:02:20,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 03:02:20,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:20,217 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:20,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:20,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1333313634, now seen corresponding path program 52 times [2022-01-18 03:02:20,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:20,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639742204] [2022-01-18 03:02:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:20,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:20,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639742204] [2022-01-18 03:02:20,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639742204] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199467140] [2022-01-18 03:02:20,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:02:20,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:20,903 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:20,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 03:02:21,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:02:21,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:21,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 03:02:21,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:22,448 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:02:22,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:02:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:22,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:22,573 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:02:22,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:02:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:24,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199467140] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:24,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:24,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-01-18 03:02:24,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80471249] [2022-01-18 03:02:24,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:24,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:02:24,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:02:24,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=5696, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:02:24,611 INFO L87 Difference]: Start difference. First operand 12390 states and 33685 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:33,093 INFO L93 Difference]: Finished difference Result 25204 states and 67412 transitions. [2022-01-18 03:02:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 03:02:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 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 152 [2022-01-18 03:02:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:33,130 INFO L225 Difference]: With dead ends: 25204 [2022-01-18 03:02:33,131 INFO L226 Difference]: Without dead ends: 22151 [2022-01-18 03:02:33,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11897 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4547, Invalid=34855, Unknown=0, NotChecked=0, Total=39402 [2022-01-18 03:02:33,133 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 2872 mSDsluCounter, 16690 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 15645 SdHoareTripleChecker+Invalid, 5558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 851 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:33,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2872 Valid, 15645 Invalid, 5558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 4392 Invalid, 0 Unknown, 851 Unchecked, 1.9s Time] [2022-01-18 03:02:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22151 states. [2022-01-18 03:02:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22151 to 12997. [2022-01-18 03:02:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12997 states, 12996 states have (on average 2.7742382271468142) internal successors, (36054), 12996 states have internal predecessors, (36054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 36054 transitions. [2022-01-18 03:02:33,393 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 36054 transitions. Word has length 152 [2022-01-18 03:02:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:33,393 INFO L470 AbstractCegarLoop]: Abstraction has 12997 states and 36054 transitions. [2022-01-18 03:02:33,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 36054 transitions. [2022-01-18 03:02:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:02:33,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:33,410 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:02:33,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:33,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 03:02:33,611 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash -616670080, now seen corresponding path program 53 times [2022-01-18 03:02:33,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:33,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911129598] [2022-01-18 03:02:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:33,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:34,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:34,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911129598] [2022-01-18 03:02:34,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911129598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:34,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354848871] [2022-01-18 03:02:34,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:02:34,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:34,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:34,362 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:34,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 03:02:34,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 03:02:34,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:34,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 03:02:34,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:35,204 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:02:35,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:02:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 03:02:35,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:35,396 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:02:35,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:02:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 03:02:35,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354848871] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:35,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:35,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 14, 14] total 47 [2022-01-18 03:02:35,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774237497] [2022-01-18 03:02:35,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:35,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 03:02:35,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 03:02:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2017, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:02:35,726 INFO L87 Difference]: Start difference. First operand 12997 states and 36054 transitions. Second operand has 47 states, 47 states have (on average 5.446808510638298) internal successors, (256), 47 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:39,968 INFO L93 Difference]: Finished difference Result 24607 states and 67643 transitions. [2022-01-18 03:02:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 03:02:39,968 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.446808510638298) internal successors, (256), 47 states have internal predecessors, (256), 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 152 [2022-01-18 03:02:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:40,010 INFO L225 Difference]: With dead ends: 24607 [2022-01-18 03:02:40,010 INFO L226 Difference]: Without dead ends: 24019 [2022-01-18 03:02:40,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 290 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 4338 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1174, Invalid=14828, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 03:02:40,012 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1556 mSDsluCounter, 10199 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 9657 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 663 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:40,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 9657 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2810 Invalid, 0 Unknown, 663 Unchecked, 1.1s Time] [2022-01-18 03:02:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24019 states. [2022-01-18 03:02:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24019 to 17652. [2022-01-18 03:02:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17652 states, 17651 states have (on average 2.866636451192567) internal successors, (50599), 17651 states have internal predecessors, (50599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17652 states to 17652 states and 50599 transitions. [2022-01-18 03:02:40,353 INFO L78 Accepts]: Start accepts. Automaton has 17652 states and 50599 transitions. Word has length 152 [2022-01-18 03:02:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:40,353 INFO L470 AbstractCegarLoop]: Abstraction has 17652 states and 50599 transitions. [2022-01-18 03:02:40,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.446808510638298) internal successors, (256), 47 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 17652 states and 50599 transitions. [2022-01-18 03:02:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:02:40,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:40,380 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:02:40,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 03:02:40,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 03:02:40,581 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash -874868082, now seen corresponding path program 54 times [2022-01-18 03:02:40,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:40,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257838906] [2022-01-18 03:02:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:40,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:41,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:41,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257838906] [2022-01-18 03:02:41,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257838906] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:41,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617861336] [2022-01-18 03:02:41,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:02:41,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:41,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:41,334 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:41,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 03:02:41,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 03:02:41,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:41,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 03:02:41,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:42,180 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:02:42,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:02:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 03:02:42,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:42,323 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:02:42,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:02:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-18 03:02:42,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617861336] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:42,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:42,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 13, 13] total 44 [2022-01-18 03:02:42,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096043829] [2022-01-18 03:02:42,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:42,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 03:02:42,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 03:02:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:02:42,663 INFO L87 Difference]: Start difference. First operand 17652 states and 50599 transitions. Second operand has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 44 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:45,775 INFO L93 Difference]: Finished difference Result 31024 states and 88059 transitions. [2022-01-18 03:02:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 03:02:45,775 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 44 states have internal predecessors, (252), 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 152 [2022-01-18 03:02:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:45,836 INFO L225 Difference]: With dead ends: 31024 [2022-01-18 03:02:45,836 INFO L226 Difference]: Without dead ends: 30219 [2022-01-18 03:02:45,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 292 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2930 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=992, Invalid=10138, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 03:02:45,838 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1409 mSDsluCounter, 8039 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 7741 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:45,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 7741 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2018 Invalid, 0 Unknown, 342 Unchecked, 0.8s Time] [2022-01-18 03:02:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30219 states. [2022-01-18 03:02:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30219 to 21390. [2022-01-18 03:02:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21390 states, 21389 states have (on average 2.918790032259573) internal successors, (62430), 21389 states have internal predecessors, (62430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21390 states to 21390 states and 62430 transitions. [2022-01-18 03:02:46,250 INFO L78 Accepts]: Start accepts. Automaton has 21390 states and 62430 transitions. Word has length 152 [2022-01-18 03:02:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:46,251 INFO L470 AbstractCegarLoop]: Abstraction has 21390 states and 62430 transitions. [2022-01-18 03:02:46,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 44 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 21390 states and 62430 transitions. [2022-01-18 03:02:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:02:46,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:46,284 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:02:46,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:46,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:46,486 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1443766706, now seen corresponding path program 55 times [2022-01-18 03:02:46,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985415657] [2022-01-18 03:02:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:46,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:47,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:47,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985415657] [2022-01-18 03:02:47,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985415657] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:47,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634494086] [2022-01-18 03:02:47,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:02:47,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:47,175 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:47,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 03:02:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:47,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 03:02:47,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:48,745 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:02:48,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:02:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:48,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:48,908 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:02:48,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:02:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:51,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634494086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:51,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:51,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-01-18 03:02:51,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996450083] [2022-01-18 03:02:51,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:51,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:02:51,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:02:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=5734, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:02:51,189 INFO L87 Difference]: Start difference. First operand 21390 states and 62430 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:55,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:55,126 INFO L93 Difference]: Finished difference Result 24002 states and 68872 transitions. [2022-01-18 03:02:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 03:02:55,126 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 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 152 [2022-01-18 03:02:55,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:55,170 INFO L225 Difference]: With dead ends: 24002 [2022-01-18 03:02:55,170 INFO L226 Difference]: Without dead ends: 23899 [2022-01-18 03:02:55,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5402 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2836, Invalid=17470, Unknown=0, NotChecked=0, Total=20306 [2022-01-18 03:02:55,171 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 2058 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 557 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:55,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 6777 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1884 Invalid, 0 Unknown, 557 Unchecked, 0.8s Time] [2022-01-18 03:02:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23899 states. [2022-01-18 03:02:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23899 to 21483. [2022-01-18 03:02:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21483 states, 21482 states have (on average 2.915696862489526) internal successors, (62635), 21482 states have internal predecessors, (62635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21483 states to 21483 states and 62635 transitions. [2022-01-18 03:02:55,507 INFO L78 Accepts]: Start accepts. Automaton has 21483 states and 62635 transitions. Word has length 152 [2022-01-18 03:02:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:55,508 INFO L470 AbstractCegarLoop]: Abstraction has 21483 states and 62635 transitions. [2022-01-18 03:02:55,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 21483 states and 62635 transitions. [2022-01-18 03:02:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:02:55,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:55,534 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:02:55,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:55,735 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash 578614990, now seen corresponding path program 56 times [2022-01-18 03:02:55,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:55,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108626541] [2022-01-18 03:02:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:55,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:56,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:56,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108626541] [2022-01-18 03:02:56,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108626541] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:56,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31970587] [2022-01-18 03:02:56,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:02:56,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:56,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:56,426 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:56,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 03:02:56,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:02:56,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:56,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-18 03:02:56,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:58,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 03:02:58,482 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:02:58,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-01-18 03:02:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:58,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:58,726 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:02:58,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:03:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:03:00,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31970587] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:03:00,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:03:00,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 29] total 86 [2022-01-18 03:03:00,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316725491] [2022-01-18 03:03:00,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:03:00,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 03:03:00,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:03:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 03:03:00,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=6434, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 03:03:00,741 INFO L87 Difference]: Start difference. First operand 21483 states and 62635 transitions. Second operand has 86 states, 86 states have (on average 4.372093023255814) internal successors, (376), 86 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:16,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:03:16,168 INFO L93 Difference]: Finished difference Result 83207 states and 243843 transitions. [2022-01-18 03:03:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-01-18 03:03:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.372093023255814) internal successors, (376), 86 states have internal predecessors, (376), 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 152 [2022-01-18 03:03:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:03:16,369 INFO L225 Difference]: With dead ends: 83207 [2022-01-18 03:03:16,369 INFO L226 Difference]: Without dead ends: 76218 [2022-01-18 03:03:16,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 249 SyntacticMatches, 12 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41809 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=7280, Invalid=99322, Unknown=0, NotChecked=0, Total=106602 [2022-01-18 03:03:16,380 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 3799 mSDsluCounter, 21519 mSDsCounter, 0 mSdLazyCounter, 7703 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3799 SdHoareTripleChecker+Valid, 19750 SdHoareTripleChecker+Invalid, 8668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 7703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 637 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:16,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3799 Valid, 19750 Invalid, 8668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 7703 Invalid, 0 Unknown, 637 Unchecked, 3.4s Time] [2022-01-18 03:03:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76218 states. [2022-01-18 03:03:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76218 to 40872. [2022-01-18 03:03:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40872 states, 40871 states have (on average 3.018105747351423) internal successors, (123353), 40871 states have internal predecessors, (123353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40872 states to 40872 states and 123353 transitions. [2022-01-18 03:03:17,748 INFO L78 Accepts]: Start accepts. Automaton has 40872 states and 123353 transitions. Word has length 152 [2022-01-18 03:03:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:03:17,748 INFO L470 AbstractCegarLoop]: Abstraction has 40872 states and 123353 transitions. [2022-01-18 03:03:17,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.372093023255814) internal successors, (376), 86 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 40872 states and 123353 transitions. [2022-01-18 03:03:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:03:17,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:03:17,799 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:03:17,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 03:03:18,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 03:03:18,002 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:03:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:03:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash -540343794, now seen corresponding path program 57 times [2022-01-18 03:03:18,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:03:18,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257073018] [2022-01-18 03:03:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:03:18,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:03:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:03:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:03:18,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:03:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257073018] [2022-01-18 03:03:18,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257073018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:03:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271169366] [2022-01-18 03:03:18,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:03:18,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:03:18,708 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:03:18,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 03:03:18,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 03:03:18,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:03:18,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 03:03:18,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:03:19,339 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:03:19,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:03:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 48 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:03:19,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:03:19,418 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-18 03:03:19,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-18 03:03:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:03:19,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271169366] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:03:19,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:03:19,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 12, 15] total 50 [2022-01-18 03:03:19,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715380708] [2022-01-18 03:03:19,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:03:19,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 03:03:19,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:03:19,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 03:03:19,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2144, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:03:19,946 INFO L87 Difference]: Start difference. First operand 40872 states and 123353 transitions. Second operand has 50 states, 50 states have (on average 6.44) internal successors, (322), 50 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:03:23,602 INFO L93 Difference]: Finished difference Result 49388 states and 145713 transitions. [2022-01-18 03:03:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 03:03:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.44) internal successors, (322), 50 states have internal predecessors, (322), 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 152 [2022-01-18 03:03:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:03:23,697 INFO L225 Difference]: With dead ends: 49388 [2022-01-18 03:03:23,697 INFO L226 Difference]: Without dead ends: 47475 [2022-01-18 03:03:23,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5124 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2656, Invalid=16250, Unknown=0, NotChecked=0, Total=18906 [2022-01-18 03:03:23,700 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2587 mSDsluCounter, 6461 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:23,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2587 Valid, 6187 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1819 Invalid, 0 Unknown, 182 Unchecked, 0.8s Time] [2022-01-18 03:03:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47475 states. [2022-01-18 03:03:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47475 to 40985. [2022-01-18 03:03:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40985 states, 40984 states have (on average 3.0184950224477847) internal successors, (123710), 40984 states have internal predecessors, (123710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40985 states to 40985 states and 123710 transitions. [2022-01-18 03:03:24,753 INFO L78 Accepts]: Start accepts. Automaton has 40985 states and 123710 transitions. Word has length 152 [2022-01-18 03:03:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:03:24,753 INFO L470 AbstractCegarLoop]: Abstraction has 40985 states and 123710 transitions. [2022-01-18 03:03:24,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.44) internal successors, (322), 50 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 40985 states and 123710 transitions. [2022-01-18 03:03:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-18 03:03:24,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:03:24,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:03:24,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 03:03:25,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:25,003 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:03:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:03:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1989207554, now seen corresponding path program 58 times [2022-01-18 03:03:25,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:03:25,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597583699] [2022-01-18 03:03:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:03:25,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:03:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:03:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:03:25,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:03:25,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597583699] [2022-01-18 03:03:25,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597583699] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:03:25,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055882376] [2022-01-18 03:03:25,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:03:25,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:03:25,694 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:03:25,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 03:03:25,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:03:25,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:03:25,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 03:03:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:03:27,301 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 03:03:27,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 03:03:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:03:27,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:03:27,504 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 03:03:27,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 03:03:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:03:28,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055882376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:03:28,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:03:28,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-01-18 03:03:28,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244072223] [2022-01-18 03:03:28,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:03:28,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:03:28,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:03:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:03:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=805, Invalid=5675, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:03:28,957 INFO L87 Difference]: Start difference. First operand 40985 states and 123710 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 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) Received shutdown request... [2022-01-18 03:03:43,888 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-01-18 03:03:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-01-18 03:03:43,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33045 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=7833, Invalid=84279, Unknown=0, NotChecked=0, Total=92112 [2022-01-18 03:03:43,897 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 3594 mSDsluCounter, 13820 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 6037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:43,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3594 Valid, 12586 Invalid, 6037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4475 Invalid, 0 Unknown, 1211 Unchecked, 2.0s Time] [2022-01-18 03:03:43,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 03:03:43,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 03:03:43,929 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 03:03:43,930 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 03:03:44,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-01-18 03:03:44,099 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (40985states) and FLOYD_HOARE automaton (currently 227 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 2ms.. [2022-01-18 03:03:44,100 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 03:03:44,100 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 03:03:44,102 INFO L732 BasicCegarLoop]: Path program histogram: [58, 1, 1, 1, 1] [2022-01-18 03:03:44,103 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:03:44,103 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:03:44,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:03:44 BasicIcfg [2022-01-18 03:03:44,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:03:44,105 INFO L158 Benchmark]: Toolchain (without parser) took 752541.40ms. Allocated memory was 392.2MB in the beginning and 3.6GB in the end (delta: 3.2GB). Free memory was 335.1MB in the beginning and 1.1GB in the end (delta: -769.1MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 392.2MB. Free memory is still 351.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.77ms. Allocated memory was 392.2MB in the beginning and 482.3MB in the end (delta: 90.2MB). Free memory was 334.9MB in the beginning and 450.3MB in the end (delta: -115.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.70ms. Allocated memory is still 482.3MB. Free memory was 450.3MB in the beginning and 448.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L158 Benchmark]: Boogie Preprocessor took 31.06ms. Allocated memory is still 482.3MB. Free memory was 448.3MB in the beginning and 447.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L158 Benchmark]: RCFGBuilder took 430.17ms. Allocated memory is still 482.3MB. Free memory was 447.2MB in the beginning and 427.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L158 Benchmark]: TraceAbstraction took 751795.76ms. Allocated memory was 482.3MB in the beginning and 3.6GB in the end (delta: 3.1GB). Free memory was 427.3MB in the beginning and 1.1GB in the end (delta: -676.9MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2022-01-18 03:03:44,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 392.2MB. Free memory is still 351.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 238.77ms. Allocated memory was 392.2MB in the beginning and 482.3MB in the end (delta: 90.2MB). Free memory was 334.9MB in the beginning and 450.3MB in the end (delta: -115.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.70ms. Allocated memory is still 482.3MB. Free memory was 450.3MB in the beginning and 448.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.06ms. Allocated memory is still 482.3MB. Free memory was 448.3MB in the beginning and 447.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 430.17ms. Allocated memory is still 482.3MB. Free memory was 447.2MB in the beginning and 427.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 751795.76ms. Allocated memory was 482.3MB in the beginning and 3.6GB in the end (delta: 3.1GB). Free memory was 427.3MB in the beginning and 1.1GB in the end (delta: -676.9MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (40985states) and FLOYD_HOARE automaton (currently 227 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 2ms.. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (40985states) and FLOYD_HOARE automaton (currently 227 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 2ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (40985states) and FLOYD_HOARE automaton (currently 227 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 751.7s, OverallIterations: 62, TraceHistogramMax: 5, PathProgramHistogramMax: 58, EmptinessCheckTime: 0.9s, AutomataDifference: 518.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139934 SdHoareTripleChecker+Valid, 71.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139934 mSDsluCounter, 623416 SdHoareTripleChecker+Invalid, 60.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53958 IncrementalHoareTripleChecker+Unchecked, 649108 mSDsCounter, 11359 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163296 IncrementalHoareTripleChecker+Invalid, 228613 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11359 mSolverCounterUnsat, 18807 mSDtfsCounter, 163296 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23814 GetRequests, 14128 SyntacticMatches, 570 SemanticMatches, 9115 ConstructedPredicates, 17 IntricatePredicates, 99 DeprecatedPredicates, 688466 ImplicationChecksByTransitivity, 495.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45651occurred in iteration=50, InterpolantAutomatonStates: 5869, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.0s AutomataMinimizationTime, 61 MinimizatonAttempts, 795246 StatesRemovedByMinimization, 59 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 7.5s SatisfiabilityAnalysisTime, 186.4s InterpolantComputationTime, 15913 NumberOfCodeBlocks, 15693 NumberOfCodeBlocksAsserted, 233 NumberOfCheckSat, 23514 ConstructedInterpolants, 1526 QuantifiedInterpolants, 325411 SizeOfPredicates, 1393 NumberOfNonLiveVariables, 18495 ConjunctsInSsa, 2446 ConjunctsInUnsatCore, 178 InterpolantComputations, 4 PerfectInterpolantSequences, 3234/14301 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown