/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:33:45,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:33:45,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:33:45,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:33:45,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:33:45,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:33:45,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:33:45,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:33:45,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:33:45,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:33:45,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:33:45,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:33:45,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:33:45,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:33:45,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:33:45,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:33:45,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:33:45,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:33:45,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:33:45,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:33:45,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:33:45,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:33:45,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:33:45,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:33:45,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:33:45,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:33:45,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:33:45,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:33:45,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:33:45,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:33:45,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:33:45,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:33:45,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:33:45,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:33:45,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:33:45,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:33:45,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 18:33:45,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:33:45,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:33:45,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:33:45,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:33:45,922 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:33:45,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:33:45,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:33:45,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:33:45,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:33:45,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:33:45,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:33:45,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:33:45,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:33:45,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:33:45,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:33:45,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:33:45,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:33:45,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:33:45,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:33:45,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:33:45,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:33:45,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:33:45,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:33:45,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:33:45,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:33:45,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:33:45,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:33:45,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:33:45,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:33:45,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:33:46,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:33:46,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:33:46,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:33:46,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:33:46,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:33:46,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-15 18:33:46,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b14d1907c/982f6a2bac4049a8bfffd44437e4115c/FLAG5fc988051 [2020-10-15 18:33:46,908 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:33:46,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-15 18:33:46,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b14d1907c/982f6a2bac4049a8bfffd44437e4115c/FLAG5fc988051 [2020-10-15 18:33:47,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b14d1907c/982f6a2bac4049a8bfffd44437e4115c [2020-10-15 18:33:47,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:33:47,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:33:47,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:33:47,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:33:47,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:33:47,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533a647f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47, skipping insertion in model container [2020-10-15 18:33:47,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:33:47,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:33:47,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:33:47,726 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:33:47,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:33:47,848 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:33:47,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47 WrapperNode [2020-10-15 18:33:47,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:33:47,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:33:47,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:33:47,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:33:47,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:33:47,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:33:47,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:33:47,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:33:47,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (1/1) ... [2020-10-15 18:33:47,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:33:47,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:33:47,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:33:47,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:33:47,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (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 [2020-10-15 18:33:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:33:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:33:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:33:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:33:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:33:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:33:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:33:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:33:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:33:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:33:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:33:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:33:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:33:48,012 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:33:48,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:33:48,391 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:33:48,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:33:48 BoogieIcfgContainer [2020-10-15 18:33:48,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:33:48,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:33:48,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:33:48,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:33:48,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:33:47" (1/3) ... [2020-10-15 18:33:48,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452d27de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:33:48, skipping insertion in model container [2020-10-15 18:33:48,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:47" (2/3) ... [2020-10-15 18:33:48,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452d27de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:33:48, skipping insertion in model container [2020-10-15 18:33:48,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:33:48" (3/3) ... [2020-10-15 18:33:48,403 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-15 18:33:48,415 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:33:48,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:33:48,423 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:33:48,424 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:33:48,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,456 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,456 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,462 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,463 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,469 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:48,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:33:48,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:33:48,521 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:33:48,522 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:33:48,522 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:33:48,522 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:33:48,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:33:48,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:33:48,523 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:33:48,538 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:33:48,541 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 18:33:48,544 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 18:33:48,546 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-15 18:33:48,588 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-15 18:33:48,588 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:33:48,593 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:33:48,596 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:33:50,174 INFO L132 LiptonReduction]: Checked pairs total: 2962 [2020-10-15 18:33:50,175 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-15 18:33:50,182 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 18:33:50,211 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:33:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:33:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:33:50,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:50,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:50,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-10-15 18:33:50,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:50,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252085960] [2020-10-15 18:33:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:50,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252085960] [2020-10-15 18:33:50,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:50,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:33:50,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770635167] [2020-10-15 18:33:50,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:33:50,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:50,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:33:50,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,474 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:33:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:50,529 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 18:33:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:33:50,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:33:50,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:50,548 INFO L225 Difference]: With dead ends: 282 [2020-10-15 18:33:50,548 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 18:33:50,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 18:33:50,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 18:33:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 18:33:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 18:33:50,641 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 18:33:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:50,642 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 18:33:50,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:33:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 18:33:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:33:50,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:50,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:50,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:33:50,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-10-15 18:33:50,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:50,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704863948] [2020-10-15 18:33:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:50,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704863948] [2020-10-15 18:33:50,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:50,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:50,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609715393] [2020-10-15 18:33:50,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:33:50,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:50,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:33:50,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,730 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-15 18:33:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:50,749 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-15 18:33:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:33:50,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:33:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:50,758 INFO L225 Difference]: With dead ends: 202 [2020-10-15 18:33:50,758 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 18:33:50,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 18:33:50,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 18:33:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 18:33:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 18:33:50,792 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-15 18:33:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:50,792 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 18:33:50,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:33:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 18:33:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:33:50,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:50,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:50,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:33:50,795 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:50,796 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-10-15 18:33:50,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:50,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839927004] [2020-10-15 18:33:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:50,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839927004] [2020-10-15 18:33:50,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:50,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:33:50,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416745694] [2020-10-15 18:33:50,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:33:50,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:33:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,883 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-15 18:33:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:50,892 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-10-15 18:33:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:33:50,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 18:33:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:50,895 INFO L225 Difference]: With dead ends: 198 [2020-10-15 18:33:50,895 INFO L226 Difference]: Without dead ends: 198 [2020-10-15 18:33:50,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-15 18:33:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-15 18:33:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-15 18:33:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-10-15 18:33:50,908 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-10-15 18:33:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:50,908 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-10-15 18:33:50,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:33:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-10-15 18:33:50,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:33:50,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:50,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:50,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:33:50,910 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:50,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-10-15 18:33:50,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:50,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960576543] [2020-10-15 18:33:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:50,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960576543] [2020-10-15 18:33:50,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:50,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:33:50,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887690129] [2020-10-15 18:33:50,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:33:50,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:50,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:33:50,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,957 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-10-15 18:33:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:50,964 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-10-15 18:33:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:33:50,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 18:33:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:50,967 INFO L225 Difference]: With dead ends: 192 [2020-10-15 18:33:50,968 INFO L226 Difference]: Without dead ends: 192 [2020-10-15 18:33:50,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-15 18:33:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-10-15 18:33:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-15 18:33:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-10-15 18:33:50,979 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-10-15 18:33:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:50,980 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-10-15 18:33:50,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:33:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-10-15 18:33:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:33:50,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:50,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:50,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:33:50,982 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-10-15 18:33:50,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:50,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408721774] [2020-10-15 18:33:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408721774] [2020-10-15 18:33:51,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:51,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669070959] [2020-10-15 18:33:51,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:51,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:51,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:51,070 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 4 states. [2020-10-15 18:33:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,107 INFO L93 Difference]: Finished difference Result 224 states and 554 transitions. [2020-10-15 18:33:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:33:51,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 18:33:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,110 INFO L225 Difference]: With dead ends: 224 [2020-10-15 18:33:51,110 INFO L226 Difference]: Without dead ends: 160 [2020-10-15 18:33:51,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-15 18:33:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-15 18:33:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-15 18:33:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 383 transitions. [2020-10-15 18:33:51,118 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 383 transitions. Word has length 12 [2020-10-15 18:33:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,119 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 383 transitions. [2020-10-15 18:33:51,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 383 transitions. [2020-10-15 18:33:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:33:51,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:51,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:51,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:33:51,121 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:51,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:51,121 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-10-15 18:33:51,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:51,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822284175] [2020-10-15 18:33:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822284175] [2020-10-15 18:33:51,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:33:51,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254887052] [2020-10-15 18:33:51,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:33:51,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:33:51,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:51,251 INFO L87 Difference]: Start difference. First operand 160 states and 383 transitions. Second operand 5 states. [2020-10-15 18:33:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,306 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-15 18:33:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:33:51,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 18:33:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,309 INFO L225 Difference]: With dead ends: 160 [2020-10-15 18:33:51,309 INFO L226 Difference]: Without dead ends: 123 [2020-10-15 18:33:51,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:33:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-15 18:33:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-15 18:33:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 18:33:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-15 18:33:51,314 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 13 [2020-10-15 18:33:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,316 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-15 18:33:51,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:33:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-15 18:33:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:33:51,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:51,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:51,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:33:51,323 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-10-15 18:33:51,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:51,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051429607] [2020-10-15 18:33:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051429607] [2020-10-15 18:33:51,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:51,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648496642] [2020-10-15 18:33:51,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:33:51,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:33:51,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:51,393 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 3 states. [2020-10-15 18:33:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,409 INFO L93 Difference]: Finished difference Result 155 states and 330 transitions. [2020-10-15 18:33:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:33:51,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-15 18:33:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,411 INFO L225 Difference]: With dead ends: 155 [2020-10-15 18:33:51,412 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 18:33:51,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:33:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 18:33:51,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-15 18:33:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 18:33:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 257 transitions. [2020-10-15 18:33:51,417 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 257 transitions. Word has length 14 [2020-10-15 18:33:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,418 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 257 transitions. [2020-10-15 18:33:51,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:33:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 257 transitions. [2020-10-15 18:33:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:33:51,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:51,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:51,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:33:51,420 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:51,420 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-10-15 18:33:51,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:51,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943448823] [2020-10-15 18:33:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943448823] [2020-10-15 18:33:51,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:33:51,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932472351] [2020-10-15 18:33:51,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:51,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:51,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:51,501 INFO L87 Difference]: Start difference. First operand 122 states and 257 transitions. Second operand 4 states. [2020-10-15 18:33:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,531 INFO L93 Difference]: Finished difference Result 154 states and 308 transitions. [2020-10-15 18:33:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:33:51,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 18:33:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,533 INFO L225 Difference]: With dead ends: 154 [2020-10-15 18:33:51,534 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 18:33:51,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 18:33:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-15 18:33:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-15 18:33:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 222 transitions. [2020-10-15 18:33:51,540 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 222 transitions. Word has length 15 [2020-10-15 18:33:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,540 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 222 transitions. [2020-10-15 18:33:51,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 222 transitions. [2020-10-15 18:33:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:33:51,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:51,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:51,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:33:51,546 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-10-15 18:33:51,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:51,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832425452] [2020-10-15 18:33:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832425452] [2020-10-15 18:33:51,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:33:51,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204462484] [2020-10-15 18:33:51,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:33:51,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:33:51,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:33:51,682 INFO L87 Difference]: Start difference. First operand 114 states and 222 transitions. Second operand 6 states. [2020-10-15 18:33:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,735 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2020-10-15 18:33:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:33:51,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 18:33:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,736 INFO L225 Difference]: With dead ends: 110 [2020-10-15 18:33:51,736 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 18:33:51,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:33:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 18:33:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-15 18:33:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 18:33:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-15 18:33:51,739 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2020-10-15 18:33:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,740 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-15 18:33:51,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:33:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-15 18:33:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:33:51,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:51,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:51,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:33:51,741 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash 13395029, now seen corresponding path program 1 times [2020-10-15 18:33:51,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:51,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466426307] [2020-10-15 18:33:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466426307] [2020-10-15 18:33:51,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:33:51,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653613012] [2020-10-15 18:33:51,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:51,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:51,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:51,792 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-15 18:33:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,810 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-10-15 18:33:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:33:51,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:33:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,811 INFO L225 Difference]: With dead ends: 51 [2020-10-15 18:33:51,811 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 18:33:51,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 18:33:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-15 18:33:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 18:33:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-15 18:33:51,813 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-15 18:33:51,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,813 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-15 18:33:51,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:51,813 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-15 18:33:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:33:51,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:51,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:51,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 18:33:51,814 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:51,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:51,815 INFO L82 PathProgramCache]: Analyzing trace with hash -34011261, now seen corresponding path program 2 times [2020-10-15 18:33:51,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:51,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095661731] [2020-10-15 18:33:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:33:51,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095661731] [2020-10-15 18:33:51,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:51,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:51,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728937240] [2020-10-15 18:33:51,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:51,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:51,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:51,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:51,859 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-15 18:33:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:51,871 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-15 18:33:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:33:51,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:33:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:51,873 INFO L225 Difference]: With dead ends: 29 [2020-10-15 18:33:51,873 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:33:51,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:33:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:33:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:33:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:33:51,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:33:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:51,875 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:33:51,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:33:51,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:33:51,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 18:33:51,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:33:51 BasicIcfg [2020-10-15 18:33:51,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:33:51,883 INFO L168 Benchmark]: Toolchain (without parser) took 4684.41 ms. Allocated memory was 252.2 MB in the beginning and 369.1 MB in the end (delta: 116.9 MB). Free memory was 207.1 MB in the beginning and 211.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 113.0 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:51,883 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:33:51,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.96 ms. Allocated memory was 252.2 MB in the beginning and 315.1 MB in the end (delta: 62.9 MB). Free memory was 207.1 MB in the beginning and 270.5 MB in the end (delta: -63.4 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:51,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.60 ms. Allocated memory is still 315.1 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:33:51,888 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 ms. Allocated memory is still 315.1 MB. Free memory was 268.0 MB in the beginning and 265.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:51,888 INFO L168 Benchmark]: RCFGBuilder took 462.12 ms. Allocated memory is still 315.1 MB. Free memory was 265.4 MB in the beginning and 243.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:51,889 INFO L168 Benchmark]: TraceAbstraction took 3484.72 ms. Allocated memory was 315.1 MB in the beginning and 369.1 MB in the end (delta: 54.0 MB). Free memory was 243.4 MB in the beginning and 211.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:51,893 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 651.96 ms. Allocated memory was 252.2 MB in the beginning and 315.1 MB in the end (delta: 62.9 MB). Free memory was 207.1 MB in the beginning and 270.5 MB in the end (delta: -63.4 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.60 ms. Allocated memory is still 315.1 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.43 ms. Allocated memory is still 315.1 MB. Free memory was 268.0 MB in the beginning and 265.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 462.12 ms. Allocated memory is still 315.1 MB. Free memory was 265.4 MB in the beginning and 243.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3484.72 ms. Allocated memory was 315.1 MB in the beginning and 369.1 MB in the end (delta: 54.0 MB). Free memory was 243.4 MB in the beginning and 211.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 824 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2962 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 216 SDtfs, 131 SDslu, 232 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...