/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:23:15,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:23:15,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:23:15,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:23:15,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:23:15,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:23:15,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:23:15,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:23:15,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:23:15,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:23:15,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:23:15,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:23:15,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:23:15,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:23:15,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:23:15,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:23:15,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:23:15,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:23:15,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:23:15,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:23:15,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:23:15,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:23:15,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:23:15,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:23:15,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:23:15,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:23:15,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:23:15,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:23:15,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:23:15,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:23:15,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:23:15,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:23:15,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:23:15,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:23:15,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:23:15,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:23:15,961 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-SemanticLbe.epf [2021-03-11 11:23:15,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:23:15,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:23:15,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:23:15,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:23:15,998 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:23:15,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:23:15,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:23:15,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:23:15,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:23:15,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:23:16,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:23:16,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:23:16,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:23:16,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:23:16,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:23:16,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:23:16,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:23:16,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:23:16,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:23:16,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:23:16,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:23:16,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:23:16,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:23:16,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:23:16,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:23:16,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:23:16,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:23:16,319 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:23:16,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-03-11 11:23:16,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5523aa7f0/99a2f7e39ffd4cc581bc387cbbbf7300/FLAG601d941b8 [2021-03-11 11:23:16,858 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:23:16,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-03-11 11:23:16,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5523aa7f0/99a2f7e39ffd4cc581bc387cbbbf7300/FLAG601d941b8 [2021-03-11 11:23:17,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5523aa7f0/99a2f7e39ffd4cc581bc387cbbbf7300 [2021-03-11 11:23:17,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:23:17,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:23:17,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:23:17,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:23:17,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:23:17,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259d3a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17, skipping insertion in model container [2021-03-11 11:23:17,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:23:17,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:23:17,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i[949,962] [2021-03-11 11:23:17,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:23:17,515 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:23:17,525 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i[949,962] [2021-03-11 11:23:17,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:23:17,637 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:23:17,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17 WrapperNode [2021-03-11 11:23:17,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:23:17,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:23:17,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:23:17,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:23:17,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:23:17,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:23:17,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:23:17,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:23:17,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... [2021-03-11 11:23:17,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:23:17,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:23:17,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:23:17,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:23:17,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:23:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:23:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:23:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:23:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:23:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:23:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:23:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:23:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:23:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:23:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:23:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:23:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:23:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:23:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:23:17,811 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:23:18,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:23:18,087 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:23:18,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:23:18 BoogieIcfgContainer [2021-03-11 11:23:18,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:23:18,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:23:18,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:23:18,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:23:18,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:23:17" (1/3) ... [2021-03-11 11:23:18,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56503841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:23:18, skipping insertion in model container [2021-03-11 11:23:18,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:23:17" (2/3) ... [2021-03-11 11:23:18,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56503841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:23:18, skipping insertion in model container [2021-03-11 11:23:18,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:23:18" (3/3) ... [2021-03-11 11:23:18,095 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-03-11 11:23:18,099 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:23:18,099 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:23:18,102 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:23:18,103 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:23:18,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,126 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,132 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,132 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,132 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,132 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,136 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,136 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:23:18,139 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:23:18,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:23:18,164 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:23:18,164 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:23:18,164 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:23:18,164 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:23:18,164 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:23:18,165 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:23:18,165 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:23:18,165 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:23:18,174 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:23:18,182 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 72 transitions, 159 flow [2021-03-11 11:23:18,184 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 72 transitions, 159 flow [2021-03-11 11:23:18,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-03-11 11:23:18,226 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-03-11 11:23:18,226 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:23:18,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 11:23:18,231 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-03-11 11:23:20,250 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 11:23:20,459 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 11:23:20,692 INFO L131 LiptonReduction]: Checked pairs total: 2472 [2021-03-11 11:23:20,692 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-03-11 11:23:20,699 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2021-03-11 11:23:20,715 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:23:20,722 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:20,722 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:20,722 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:20,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:20,726 INFO L82 PathProgramCache]: Analyzing trace with hash 464891188, now seen corresponding path program 1 times [2021-03-11 11:23:20,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:20,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127002530] [2021-03-11 11:23:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:20,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:20,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:20,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127002530] [2021-03-11 11:23:20,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:20,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:23:20,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200404624] [2021-03-11 11:23:20,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:23:20,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:23:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:20,986 INFO L87 Difference]: Start difference. First operand has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,020 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2021-03-11 11:23:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:23:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-03-11 11:23:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,031 INFO L225 Difference]: With dead ends: 218 [2021-03-11 11:23:21,031 INFO L226 Difference]: Without dead ends: 170 [2021-03-11 11:23:21,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-03-11 11:23:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-03-11 11:23:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.6745562130177514) internal successors, (452), 169 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2021-03-11 11:23:21,083 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2021-03-11 11:23:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,084 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2021-03-11 11:23:21,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2021-03-11 11:23:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:23:21,085 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:23:21,086 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1507676814, now seen corresponding path program 1 times [2021-03-11 11:23:21,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756496190] [2021-03-11 11:23:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756496190] [2021-03-11 11:23:21,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:23:21,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726131144] [2021-03-11 11:23:21,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:23:21,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:23:21,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,160 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,168 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2021-03-11 11:23:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:23:21,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-03-11 11:23:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,171 INFO L225 Difference]: With dead ends: 166 [2021-03-11 11:23:21,172 INFO L226 Difference]: Without dead ends: 166 [2021-03-11 11:23:21,172 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-03-11 11:23:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-03-11 11:23:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.6545454545454548) internal successors, (438), 165 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2021-03-11 11:23:21,200 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2021-03-11 11:23:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,200 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2021-03-11 11:23:21,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2021-03-11 11:23:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:23:21,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:23:21,202 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1628280041, now seen corresponding path program 1 times [2021-03-11 11:23:21,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659922043] [2021-03-11 11:23:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:23:21,268 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:23:21,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659922043] [2021-03-11 11:23:21,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:23:21,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100077522] [2021-03-11 11:23:21,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:23:21,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:23:21,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,283 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,297 INFO L93 Difference]: Finished difference Result 248 states and 615 transitions. [2021-03-11 11:23:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:23:21,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-03-11 11:23:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,299 INFO L225 Difference]: With dead ends: 248 [2021-03-11 11:23:21,299 INFO L226 Difference]: Without dead ends: 216 [2021-03-11 11:23:21,300 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-03-11 11:23:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 192. [2021-03-11 11:23:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.4659685863874348) internal successors, (471), 191 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 471 transitions. [2021-03-11 11:23:21,313 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 471 transitions. Word has length 10 [2021-03-11 11:23:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,313 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 471 transitions. [2021-03-11 11:23:21,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 471 transitions. [2021-03-11 11:23:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:23:21,314 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,315 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:23:21,315 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2136928431, now seen corresponding path program 1 times [2021-03-11 11:23:21,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352845036] [2021-03-11 11:23:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,351 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:23:21,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352845036] [2021-03-11 11:23:21,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:23:21,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141960526] [2021-03-11 11:23:21,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:23:21,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:23:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:23:21,360 INFO L87 Difference]: Start difference. First operand 192 states and 471 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,375 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2021-03-11 11:23:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:23:21,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-03-11 11:23:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,377 INFO L225 Difference]: With dead ends: 206 [2021-03-11 11:23:21,377 INFO L226 Difference]: Without dead ends: 206 [2021-03-11 11:23:21,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:23:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-03-11 11:23:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2021-03-11 11:23:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.4615384615384617) internal successors, (416), 169 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 416 transitions. [2021-03-11 11:23:21,387 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 416 transitions. Word has length 10 [2021-03-11 11:23:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,387 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 416 transitions. [2021-03-11 11:23:21,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 416 transitions. [2021-03-11 11:23:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:23:21,388 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,388 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:23:21,389 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1062948529, now seen corresponding path program 1 times [2021-03-11 11:23:21,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130781259] [2021-03-11 11:23:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:23:21,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,426 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:23:21,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130781259] [2021-03-11 11:23:21,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:23:21,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459330707] [2021-03-11 11:23:21,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:23:21,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:23:21,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:23:21,438 INFO L87 Difference]: Start difference. First operand 170 states and 416 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,465 INFO L93 Difference]: Finished difference Result 216 states and 501 transitions. [2021-03-11 11:23:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:23:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:23:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,467 INFO L225 Difference]: With dead ends: 216 [2021-03-11 11:23:21,467 INFO L226 Difference]: Without dead ends: 192 [2021-03-11 11:23:21,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:23:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-03-11 11:23:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2021-03-11 11:23:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.3962264150943398) internal successors, (381), 159 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 381 transitions. [2021-03-11 11:23:21,477 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 381 transitions. Word has length 11 [2021-03-11 11:23:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,477 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 381 transitions. [2021-03-11 11:23:21,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 381 transitions. [2021-03-11 11:23:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:23:21,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,478 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:23:21,478 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1820294169, now seen corresponding path program 1 times [2021-03-11 11:23:21,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277331189] [2021-03-11 11:23:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,519 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:23:21,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:23:21,528 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:23:21,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277331189] [2021-03-11 11:23:21,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:23:21,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032469557] [2021-03-11 11:23:21,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:23:21,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:23:21,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:23:21,543 INFO L87 Difference]: Start difference. First operand 160 states and 381 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,566 INFO L93 Difference]: Finished difference Result 188 states and 407 transitions. [2021-03-11 11:23:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:23:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:23:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,567 INFO L225 Difference]: With dead ends: 188 [2021-03-11 11:23:21,567 INFO L226 Difference]: Without dead ends: 136 [2021-03-11 11:23:21,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:23:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-03-11 11:23:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-03-11 11:23:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.1481481481481484) internal successors, (290), 135 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 290 transitions. [2021-03-11 11:23:21,573 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 290 transitions. Word has length 11 [2021-03-11 11:23:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,573 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 290 transitions. [2021-03-11 11:23:21,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 290 transitions. [2021-03-11 11:23:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:23:21,574 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,574 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:23:21,574 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,575 INFO L82 PathProgramCache]: Analyzing trace with hash -594553185, now seen corresponding path program 1 times [2021-03-11 11:23:21,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243439704] [2021-03-11 11:23:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,608 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:23:21,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:23:21,612 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:23:21,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243439704] [2021-03-11 11:23:21,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:23:21,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874240969] [2021-03-11 11:23:21,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:23:21,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:23:21,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:23:21,622 INFO L87 Difference]: Start difference. First operand 136 states and 290 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,672 INFO L93 Difference]: Finished difference Result 136 states and 267 transitions. [2021-03-11 11:23:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:23:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-03-11 11:23:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,674 INFO L225 Difference]: With dead ends: 136 [2021-03-11 11:23:21,675 INFO L226 Difference]: Without dead ends: 95 [2021-03-11 11:23:21,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:23:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-03-11 11:23:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-03-11 11:23:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.872340425531915) internal successors, (176), 94 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 176 transitions. [2021-03-11 11:23:21,689 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 176 transitions. Word has length 12 [2021-03-11 11:23:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,689 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 176 transitions. [2021-03-11 11:23:21,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 176 transitions. [2021-03-11 11:23:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:23:21,690 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,690 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:23:21,691 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1504849926, now seen corresponding path program 1 times [2021-03-11 11:23:21,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546402901] [2021-03-11 11:23:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:23:21,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546402901] [2021-03-11 11:23:21,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:23:21,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973674022] [2021-03-11 11:23:21,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:23:21,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:23:21,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,736 INFO L87 Difference]: Start difference. First operand 95 states and 176 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,742 INFO L93 Difference]: Finished difference Result 120 states and 214 transitions. [2021-03-11 11:23:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:23:21,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:23:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,743 INFO L225 Difference]: With dead ends: 120 [2021-03-11 11:23:21,743 INFO L226 Difference]: Without dead ends: 96 [2021-03-11 11:23:21,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:23:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-03-11 11:23:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2021-03-11 11:23:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.8295454545454546) internal successors, (161), 88 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 161 transitions. [2021-03-11 11:23:21,746 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 161 transitions. Word has length 13 [2021-03-11 11:23:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,746 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 161 transitions. [2021-03-11 11:23:21,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 161 transitions. [2021-03-11 11:23:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:23:21,747 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:23:21,748 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1344242523, now seen corresponding path program 1 times [2021-03-11 11:23:21,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170230144] [2021-03-11 11:23:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,808 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:23:21,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:23:21,815 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:23:21,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170230144] [2021-03-11 11:23:21,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:23:21,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484309225] [2021-03-11 11:23:21,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:23:21,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:23:21,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:23:21,827 INFO L87 Difference]: Start difference. First operand 89 states and 161 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,862 INFO L93 Difference]: Finished difference Result 85 states and 151 transitions. [2021-03-11 11:23:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:23:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-03-11 11:23:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,863 INFO L225 Difference]: With dead ends: 85 [2021-03-11 11:23:21,863 INFO L226 Difference]: Without dead ends: 26 [2021-03-11 11:23:21,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:23:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-03-11 11:23:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-03-11 11:23:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2021-03-11 11:23:21,865 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2021-03-11 11:23:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,865 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-03-11 11:23:21,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-03-11 11:23:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 11:23:21,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:23:21,866 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:23:21,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:23:21,867 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:23:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:23:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash -803372161, now seen corresponding path program 1 times [2021-03-11 11:23:21,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:23:21,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951302478] [2021-03-11 11:23:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:23:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:23:21,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:23:21,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:23:21,943 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:23:21,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:23:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:23:21,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951302478] [2021-03-11 11:23:21,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:23:21,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:23:21,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17728249] [2021-03-11 11:23:21,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:23:21,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:23:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:23:21,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:23:21,955 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:23:21,966 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-03-11 11:23:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:23:21,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-03-11 11:23:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:23:21,970 INFO L225 Difference]: With dead ends: 25 [2021-03-11 11:23:21,970 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:23:21,973 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:23:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:23:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:23:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:23:21,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-03-11 11:23:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:23:21,974 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:23:21,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:23:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:23:21,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:23:21,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:23:21,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:23:21 BasicIcfg [2021-03-11 11:23:21,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:23:21,978 INFO L168 Benchmark]: Toolchain (without parser) took 4819.72 ms. Allocated memory was 255.9 MB in the beginning and 469.8 MB in the end (delta: 213.9 MB). Free memory was 234.6 MB in the beginning and 407.9 MB in the end (delta: -173.3 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.0 GB. [2021-03-11 11:23:21,978 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:23:21,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.23 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 234.0 MB in the beginning and 353.2 MB in the end (delta: -119.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:23:21,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.62 ms. Allocated memory is still 390.1 MB. Free memory was 353.2 MB in the beginning and 351.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:23:21,980 INFO L168 Benchmark]: Boogie Preprocessor took 32.60 ms. Allocated memory is still 390.1 MB. Free memory was 351.1 MB in the beginning and 349.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:23:21,980 INFO L168 Benchmark]: RCFGBuilder took 357.45 ms. Allocated memory is still 390.1 MB. Free memory was 349.7 MB in the beginning and 328.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:23:21,982 INFO L168 Benchmark]: TraceAbstraction took 3886.68 ms. Allocated memory was 390.1 MB in the beginning and 469.8 MB in the end (delta: 79.7 MB). Free memory was 328.0 MB in the beginning and 407.9 MB in the end (delta: -79.8 MB). Peak memory consumption was 584.0 kB. Max. memory is 16.0 GB. [2021-03-11 11:23:21,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 474.23 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 234.0 MB in the beginning and 353.2 MB in the end (delta: -119.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.62 ms. Allocated memory is still 390.1 MB. Free memory was 353.2 MB in the beginning and 351.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.60 ms. Allocated memory is still 390.1 MB. Free memory was 351.1 MB in the beginning and 349.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 357.45 ms. Allocated memory is still 390.1 MB. Free memory was 349.7 MB in the beginning and 328.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3886.68 ms. Allocated memory was 390.1 MB in the beginning and 469.8 MB in the end (delta: 79.7 MB). Free memory was 328.0 MB in the beginning and 407.9 MB in the end (delta: -79.8 MB). Peak memory consumption was 584.0 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2508.0ms, 80 PlacesBefore, 30 PlacesAfterwards, 72 TransitionsBefore, 21 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2472 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1411, positive: 1309, positive conditional: 0, positive unconditional: 1309, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 850, positive: 821, positive conditional: 0, positive unconditional: 821, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 850, positive: 808, positive conditional: 0, positive unconditional: 808, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1411, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 850, unknown conditional: 0, unknown unconditional: 850] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3812.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 14.9ms, AutomataDifference: 283.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2550.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 176 SDtfs, 132 SDslu, 181 SDs, 0 SdLazy, 117 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 116.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 112.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 119.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 99 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.6ms SsaConstructionTime, 207.3ms SatisfiabilityAnalysisTime, 461.1ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 467 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...