/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/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:33:42,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:33:42,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:33:42,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:33:42,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:33:42,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:33:42,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:33:42,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:33:42,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:33:42,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:33:42,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:33:42,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:33:42,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:33:42,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:33:42,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:33:42,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:33:42,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:33:42,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:33:42,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:33:42,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:33:42,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:33:42,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:33:42,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:33:42,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:33:42,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:33:42,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:33:42,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:33:42,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:33:42,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:33:42,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:33:42,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:33:42,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:33:42,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:33:42,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:33:42,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:33:42,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:33:42,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:33:42,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:33:42,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:33:42,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:33:42,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:33:42,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:33:42,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:33:42,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:33:42,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:33:42,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:33:42,906 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:33:42,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:33:42,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:33:42,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:33:42,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:33:42,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:33:42,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:33:42,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:33:42,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:33:42,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:33:42,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:33:42,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:33:42,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:33:42,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:33:42,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:33:42,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:33:42,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:33:42,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:33:42,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:33:42,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:33:42,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:33:42,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:33:42,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:33:42,912 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:33:42,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:33:42,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:33:43,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:33:43,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:33:43,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:33:43,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:33:43,265 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:33:43,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-11 18:33:43,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4466f75f/6f6f39e88c0d490b8758dba5c6a8830b/FLAGddb5dd8ec [2020-10-11 18:33:43,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:33:43,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-11 18:33:43,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4466f75f/6f6f39e88c0d490b8758dba5c6a8830b/FLAGddb5dd8ec [2020-10-11 18:33:44,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4466f75f/6f6f39e88c0d490b8758dba5c6a8830b [2020-10-11 18:33:44,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:33:44,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:33:44,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:33:44,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:33:44,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:33:44,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fedfef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44, skipping insertion in model container [2020-10-11 18:33:44,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:33:44,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:33:44,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:33:44,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:33:44,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:33:44,816 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:33:44,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44 WrapperNode [2020-10-11 18:33:44,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:33:44,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:33:44,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:33:44,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:33:44,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:33:44,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:33:44,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:33:44,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:33:44,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (1/1) ... [2020-10-11 18:33:44,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:33:44,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:33:44,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:33:44,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:33:44,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (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 [2020-10-11 18:33:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:33:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:33:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:33:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:33:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:33:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:33:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:33:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:33:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:33:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:33:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:33:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:33:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:33:44,974 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:33:45,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:33:45,343 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:33:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:33:45 BoogieIcfgContainer [2020-10-11 18:33:45,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:33:45,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:33:45,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:33:45,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:33:45,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:33:44" (1/3) ... [2020-10-11 18:33:45,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dc788e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:33:45, skipping insertion in model container [2020-10-11 18:33:45,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:44" (2/3) ... [2020-10-11 18:33:45,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dc788e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:33:45, skipping insertion in model container [2020-10-11 18:33:45,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:33:45" (3/3) ... [2020-10-11 18:33:45,354 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-10-11 18:33:45,367 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:33:45,375 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:33:45,376 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:33:45,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,412 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,421 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:45,459 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:33:45,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:33:45,487 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:33:45,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:33:45,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:33:45,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:33:45,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:33:45,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:33:45,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:33:45,506 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:33:45,547 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:33:45,548 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:33:45,553 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:33:45,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:33:45,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:33:45,585 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:33:45,585 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:33:45,586 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:45,587 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:45,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:45,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-10-11 18:33:45,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:45,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663845477] [2020-10-11 18:33:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:46,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663845477] [2020-10-11 18:33:46,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:46,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:46,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605131313] [2020-10-11 18:33:46,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:46,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:46,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:46,359 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:33:46,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:33:46,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:46,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:33:46,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:46,553 INFO L129 PetriNetUnfolder]: 24/130 cut-off events. [2020-10-11 18:33:46,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:33:46,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 130 events. 24/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 427 event pairs, 5 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 176. Up to 31 conditions per place. [2020-10-11 18:33:46,557 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 8 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2020-10-11 18:33:46,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 221 flow [2020-10-11 18:33:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 565 transitions. [2020-10-11 18:33:46,576 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8968253968253969 [2020-10-11 18:33:46,577 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 565 transitions. [2020-10-11 18:33:46,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 565 transitions. [2020-10-11 18:33:46,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:46,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 565 transitions. [2020-10-11 18:33:46,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:46,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:46,596 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:46,599 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 565 transitions. [2020-10-11 18:33:46,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 221 flow [2020-10-11 18:33:46,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:33:46,609 INFO L241 Difference]: Finished difference. Result has 77 places, 57 transitions, 159 flow [2020-10-11 18:33:46,612 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2020-10-11 18:33:46,613 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:33:46,614 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 159 flow [2020-10-11 18:33:46,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:46,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:46,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:46,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:33:46,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1618521006, now seen corresponding path program 1 times [2020-10-11 18:33:46,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:46,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049502615] [2020-10-11 18:33:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:46,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049502615] [2020-10-11 18:33:46,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:46,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:46,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753538905] [2020-10-11 18:33:46,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:46,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:46,949 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:33:46,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 159 flow. Second operand 6 states. [2020-10-11 18:33:46,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:46,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:33:46,950 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:47,081 INFO L129 PetriNetUnfolder]: 28/146 cut-off events. [2020-10-11 18:33:47,082 INFO L130 PetriNetUnfolder]: For 171/172 co-relation queries the response was YES. [2020-10-11 18:33:47,084 INFO L80 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 146 events. 28/146 cut-off events. For 171/172 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 483 event pairs, 9 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 316. Up to 31 conditions per place. [2020-10-11 18:33:47,085 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/67 dead transitions. [2020-10-11 18:33:47,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 67 transitions, 233 flow [2020-10-11 18:33:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:33:47,089 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:33:47,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:33:47,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:33:47,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:47,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:33:47,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:47,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:47,094 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:47,094 INFO L185 Difference]: Start difference. First operand has 77 places, 57 transitions, 159 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:33:47,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 67 transitions, 233 flow [2020-10-11 18:33:47,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 216 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:33:47,101 INFO L241 Difference]: Finished difference. Result has 82 places, 57 transitions, 170 flow [2020-10-11 18:33:47,102 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=82, PETRI_TRANSITIONS=57} [2020-10-11 18:33:47,102 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2020-10-11 18:33:47,103 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 57 transitions, 170 flow [2020-10-11 18:33:47,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:47,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:47,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:47,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:33:47,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:47,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1714447379, now seen corresponding path program 1 times [2020-10-11 18:33:47,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:47,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686661252] [2020-10-11 18:33:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:47,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686661252] [2020-10-11 18:33:47,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:47,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:47,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292476375] [2020-10-11 18:33:47,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:47,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:47,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:47,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:47,540 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:33:47,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 57 transitions, 170 flow. Second operand 7 states. [2020-10-11 18:33:47,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:47,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:33:47,542 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:47,733 INFO L129 PetriNetUnfolder]: 16/146 cut-off events. [2020-10-11 18:33:47,733 INFO L130 PetriNetUnfolder]: For 230/267 co-relation queries the response was YES. [2020-10-11 18:33:47,735 INFO L80 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 146 events. 16/146 cut-off events. For 230/267 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 598 event pairs, 2 based on Foata normal form. 5/147 useless extension candidates. Maximal degree in co-relation 352. Up to 31 conditions per place. [2020-10-11 18:33:47,736 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 15 selfloop transitions, 3 changer transitions 13/75 dead transitions. [2020-10-11 18:33:47,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 357 flow [2020-10-11 18:33:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:33:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:33:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 659 transitions. [2020-10-11 18:33:47,739 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8558441558441559 [2020-10-11 18:33:47,740 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 659 transitions. [2020-10-11 18:33:47,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 659 transitions. [2020-10-11 18:33:47,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:47,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 659 transitions. [2020-10-11 18:33:47,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:33:47,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:33:47,744 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:33:47,745 INFO L185 Difference]: Start difference. First operand has 82 places, 57 transitions, 170 flow. Second operand 11 states and 659 transitions. [2020-10-11 18:33:47,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 357 flow [2020-10-11 18:33:47,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 311 flow, removed 20 selfloop flow, removed 8 redundant places. [2020-10-11 18:33:47,750 INFO L241 Difference]: Finished difference. Result has 87 places, 57 transitions, 181 flow [2020-10-11 18:33:47,750 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=181, PETRI_PLACES=87, PETRI_TRANSITIONS=57} [2020-10-11 18:33:47,751 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 22 predicate places. [2020-10-11 18:33:47,751 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 57 transitions, 181 flow [2020-10-11 18:33:47,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:47,751 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:47,751 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:47,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:33:47,752 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:47,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1688737875, now seen corresponding path program 2 times [2020-10-11 18:33:47,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:47,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164968243] [2020-10-11 18:33:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:47,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164968243] [2020-10-11 18:33:47,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:47,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:47,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172916056] [2020-10-11 18:33:47,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:47,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:47,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:47,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:47,998 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:33:47,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 57 transitions, 181 flow. Second operand 6 states. [2020-10-11 18:33:47,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:47,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:33:47,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:48,138 INFO L129 PetriNetUnfolder]: 31/197 cut-off events. [2020-10-11 18:33:48,138 INFO L130 PetriNetUnfolder]: For 506/514 co-relation queries the response was YES. [2020-10-11 18:33:48,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 197 events. 31/197 cut-off events. For 506/514 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 892 event pairs, 19 based on Foata normal form. 8/201 useless extension candidates. Maximal degree in co-relation 500. Up to 37 conditions per place. [2020-10-11 18:33:48,141 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/67 dead transitions. [2020-10-11 18:33:48,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 67 transitions, 269 flow [2020-10-11 18:33:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:48,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:33:48,144 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:33:48,144 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:33:48,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:33:48,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:48,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:33:48,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:48,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:48,148 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:48,149 INFO L185 Difference]: Start difference. First operand has 87 places, 57 transitions, 181 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:33:48,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 67 transitions, 269 flow [2020-10-11 18:33:48,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 230 flow, removed 18 selfloop flow, removed 9 redundant places. [2020-10-11 18:33:48,153 INFO L241 Difference]: Finished difference. Result has 85 places, 57 transitions, 182 flow [2020-10-11 18:33:48,154 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=85, PETRI_TRANSITIONS=57} [2020-10-11 18:33:48,154 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-11 18:33:48,154 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 57 transitions, 182 flow [2020-10-11 18:33:48,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:48,154 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:48,155 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:48,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:33:48,155 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:48,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1934270679, now seen corresponding path program 1 times [2020-10-11 18:33:48,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:48,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333750427] [2020-10-11 18:33:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:48,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333750427] [2020-10-11 18:33:48,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:48,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:48,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607005556] [2020-10-11 18:33:48,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:48,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:48,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:48,527 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:33:48,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 57 transitions, 182 flow. Second operand 7 states. [2020-10-11 18:33:48,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:48,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:33:48,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:48,653 INFO L129 PetriNetUnfolder]: 13/142 cut-off events. [2020-10-11 18:33:48,653 INFO L130 PetriNetUnfolder]: For 311/358 co-relation queries the response was YES. [2020-10-11 18:33:48,654 INFO L80 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 142 events. 13/142 cut-off events. For 311/358 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 563 event pairs, 5 based on Foata normal form. 7/146 useless extension candidates. Maximal degree in co-relation 366. Up to 30 conditions per place. [2020-10-11 18:33:48,655 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 8 selfloop transitions, 5 changer transitions 13/69 dead transitions. [2020-10-11 18:33:48,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 69 transitions, 347 flow [2020-10-11 18:33:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:33:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:33:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 425 transitions. [2020-10-11 18:33:48,659 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8673469387755102 [2020-10-11 18:33:48,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 425 transitions. [2020-10-11 18:33:48,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 425 transitions. [2020-10-11 18:33:48,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:48,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 425 transitions. [2020-10-11 18:33:48,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:33:48,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:33:48,665 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:33:48,665 INFO L185 Difference]: Start difference. First operand has 85 places, 57 transitions, 182 flow. Second operand 7 states and 425 transitions. [2020-10-11 18:33:48,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 69 transitions, 347 flow [2020-10-11 18:33:48,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 69 transitions, 315 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:33:48,671 INFO L241 Difference]: Finished difference. Result has 81 places, 56 transitions, 185 flow [2020-10-11 18:33:48,671 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2020-10-11 18:33:48,671 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2020-10-11 18:33:48,671 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 185 flow [2020-10-11 18:33:48,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:48,672 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:48,672 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:48,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:33:48,673 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash 855513171, now seen corresponding path program 1 times [2020-10-11 18:33:48,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:48,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509860245] [2020-10-11 18:33:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:48,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509860245] [2020-10-11 18:33:48,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:48,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:48,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912643002] [2020-10-11 18:33:48,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:48,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:48,936 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:33:48,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 185 flow. Second operand 6 states. [2020-10-11 18:33:48,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:48,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:33:48,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:49,061 INFO L129 PetriNetUnfolder]: 3/100 cut-off events. [2020-10-11 18:33:49,062 INFO L130 PetriNetUnfolder]: For 145/157 co-relation queries the response was YES. [2020-10-11 18:33:49,062 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 100 events. 3/100 cut-off events. For 145/157 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 4/103 useless extension candidates. Maximal degree in co-relation 211. Up to 13 conditions per place. [2020-10-11 18:33:49,063 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 12/66 dead transitions. [2020-10-11 18:33:49,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 66 transitions, 301 flow [2020-10-11 18:33:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-11 18:33:49,066 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2020-10-11 18:33:49,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-11 18:33:49,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-11 18:33:49,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:49,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-11 18:33:49,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:49,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:49,070 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:49,070 INFO L185 Difference]: Start difference. First operand has 81 places, 56 transitions, 185 flow. Second operand 9 states and 553 transitions. [2020-10-11 18:33:49,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 66 transitions, 301 flow [2020-10-11 18:33:49,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 261 flow, removed 15 selfloop flow, removed 6 redundant places. [2020-10-11 18:33:49,074 INFO L241 Difference]: Finished difference. Result has 86 places, 54 transitions, 168 flow [2020-10-11 18:33:49,075 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=168, PETRI_PLACES=86, PETRI_TRANSITIONS=54} [2020-10-11 18:33:49,075 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-11 18:33:49,075 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 54 transitions, 168 flow [2020-10-11 18:33:49,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:49,075 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:49,076 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:49,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:33:49,076 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:49,077 INFO L82 PathProgramCache]: Analyzing trace with hash -821321306, now seen corresponding path program 1 times [2020-10-11 18:33:49,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:49,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457475445] [2020-10-11 18:33:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:49,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457475445] [2020-10-11 18:33:49,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:49,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:49,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567942817] [2020-10-11 18:33:49,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:49,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:49,505 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:33:49,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 54 transitions, 168 flow. Second operand 7 states. [2020-10-11 18:33:49,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:49,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:33:49,506 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:49,591 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2020-10-11 18:33:49,591 INFO L130 PetriNetUnfolder]: For 80/88 co-relation queries the response was YES. [2020-10-11 18:33:49,591 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 72 events. 0/72 cut-off events. For 80/88 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 120 event pairs, 0 based on Foata normal form. 3/75 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2020-10-11 18:33:49,592 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 10 selfloop transitions, 1 changer transitions 5/59 dead transitions. [2020-10-11 18:33:49,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 59 transitions, 231 flow [2020-10-11 18:33:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:33:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:33:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:33:49,597 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:33:49,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:33:49,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:33:49,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:49,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:33:49,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:33:49,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:33:49,600 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:33:49,600 INFO L185 Difference]: Start difference. First operand has 86 places, 54 transitions, 168 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:33:49,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 59 transitions, 231 flow [2020-10-11 18:33:49,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 191 flow, removed 18 selfloop flow, removed 11 redundant places. [2020-10-11 18:33:49,604 INFO L241 Difference]: Finished difference. Result has 80 places, 54 transitions, 153 flow [2020-10-11 18:33:49,604 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2020-10-11 18:33:49,604 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:33:49,604 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 153 flow [2020-10-11 18:33:49,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:49,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:49,605 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:49,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:33:49,605 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash 138333028, now seen corresponding path program 2 times [2020-10-11 18:33:49,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:49,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538402374] [2020-10-11 18:33:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:49,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538402374] [2020-10-11 18:33:49,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:49,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:49,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557470861] [2020-10-11 18:33:49,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:49,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:49,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:49,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:49,870 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:33:49,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 153 flow. Second operand 6 states. [2020-10-11 18:33:49,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:49,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:33:49,871 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:50,054 INFO L129 PetriNetUnfolder]: 133/387 cut-off events. [2020-10-11 18:33:50,055 INFO L130 PetriNetUnfolder]: For 96/98 co-relation queries the response was YES. [2020-10-11 18:33:50,056 INFO L80 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 387 events. 133/387 cut-off events. For 96/98 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2223 event pairs, 14 based on Foata normal form. 12/376 useless extension candidates. Maximal degree in co-relation 694. Up to 121 conditions per place. [2020-10-11 18:33:50,058 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 6 changer transitions 19/79 dead transitions. [2020-10-11 18:33:50,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 273 flow [2020-10-11 18:33:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2020-10-11 18:33:50,062 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2020-10-11 18:33:50,062 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2020-10-11 18:33:50,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2020-10-11 18:33:50,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:50,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2020-10-11 18:33:50,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:50,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:50,066 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:50,067 INFO L185 Difference]: Start difference. First operand has 80 places, 54 transitions, 153 flow. Second operand 9 states and 550 transitions. [2020-10-11 18:33:50,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 273 flow [2020-10-11 18:33:50,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 260 flow, removed 5 selfloop flow, removed 6 redundant places. [2020-10-11 18:33:50,070 INFO L241 Difference]: Finished difference. Result has 84 places, 57 transitions, 196 flow [2020-10-11 18:33:50,070 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=84, PETRI_TRANSITIONS=57} [2020-10-11 18:33:50,071 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2020-10-11 18:33:50,071 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 57 transitions, 196 flow [2020-10-11 18:33:50,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:50,071 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:50,071 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:50,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:33:50,072 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:50,072 INFO L82 PathProgramCache]: Analyzing trace with hash 458759409, now seen corresponding path program 1 times [2020-10-11 18:33:50,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:50,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895754057] [2020-10-11 18:33:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:50,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895754057] [2020-10-11 18:33:50,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:50,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:50,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051855480] [2020-10-11 18:33:50,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:50,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:50,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:50,358 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:33:50,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 57 transitions, 196 flow. Second operand 7 states. [2020-10-11 18:33:50,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:50,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:33:50,359 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:50,534 INFO L129 PetriNetUnfolder]: 68/257 cut-off events. [2020-10-11 18:33:50,535 INFO L130 PetriNetUnfolder]: For 419/500 co-relation queries the response was YES. [2020-10-11 18:33:50,536 INFO L80 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 257 events. 68/257 cut-off events. For 419/500 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1275 event pairs, 0 based on Foata normal form. 23/272 useless extension candidates. Maximal degree in co-relation 777. Up to 103 conditions per place. [2020-10-11 18:33:50,537 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 19/82 dead transitions. [2020-10-11 18:33:50,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 449 flow [2020-10-11 18:33:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:33:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:33:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2020-10-11 18:33:50,541 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2020-10-11 18:33:50,541 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2020-10-11 18:33:50,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2020-10-11 18:33:50,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:50,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2020-10-11 18:33:50,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:33:50,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:33:50,546 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:33:50,546 INFO L185 Difference]: Start difference. First operand has 84 places, 57 transitions, 196 flow. Second operand 10 states and 610 transitions. [2020-10-11 18:33:50,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 449 flow [2020-10-11 18:33:50,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 425 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:33:50,551 INFO L241 Difference]: Finished difference. Result has 90 places, 60 transitions, 264 flow [2020-10-11 18:33:50,551 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=90, PETRI_TRANSITIONS=60} [2020-10-11 18:33:50,551 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 25 predicate places. [2020-10-11 18:33:50,552 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 60 transitions, 264 flow [2020-10-11 18:33:50,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:50,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:50,552 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:50,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:33:50,552 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:50,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2061651532, now seen corresponding path program 1 times [2020-10-11 18:33:50,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:50,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69113822] [2020-10-11 18:33:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:50,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69113822] [2020-10-11 18:33:50,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:50,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:33:50,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864805901] [2020-10-11 18:33:50,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:33:50,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:33:50,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:33:50,824 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:33:50,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 60 transitions, 264 flow. Second operand 8 states. [2020-10-11 18:33:50,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:50,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:33:50,825 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:51,036 INFO L129 PetriNetUnfolder]: 18/132 cut-off events. [2020-10-11 18:33:51,036 INFO L130 PetriNetUnfolder]: For 498/557 co-relation queries the response was YES. [2020-10-11 18:33:51,037 INFO L80 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 132 events. 18/132 cut-off events. For 498/557 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 407 event pairs, 0 based on Foata normal form. 24/155 useless extension candidates. Maximal degree in co-relation 418. Up to 38 conditions per place. [2020-10-11 18:33:51,037 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-11 18:33:51,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 448 flow [2020-10-11 18:33:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:33:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:33:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-11 18:33:51,042 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-11 18:33:51,042 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-11 18:33:51,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-11 18:33:51,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:51,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-11 18:33:51,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:33:51,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:33:51,049 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:33:51,049 INFO L185 Difference]: Start difference. First operand has 90 places, 60 transitions, 264 flow. Second operand 11 states and 658 transitions. [2020-10-11 18:33:51,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 448 flow [2020-10-11 18:33:51,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 73 transitions, 341 flow, removed 41 selfloop flow, removed 12 redundant places. [2020-10-11 18:33:51,054 INFO L241 Difference]: Finished difference. Result has 90 places, 60 transitions, 242 flow [2020-10-11 18:33:51,054 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=242, PETRI_PLACES=90, PETRI_TRANSITIONS=60} [2020-10-11 18:33:51,054 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 25 predicate places. [2020-10-11 18:33:51,055 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 60 transitions, 242 flow [2020-10-11 18:33:51,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:33:51,055 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:51,055 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:51,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:33:51,055 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1606412017, now seen corresponding path program 1 times [2020-10-11 18:33:51,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:51,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720058925] [2020-10-11 18:33:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:51,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720058925] [2020-10-11 18:33:51,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:51,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:51,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331856935] [2020-10-11 18:33:51,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:51,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:51,371 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:33:51,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 60 transitions, 242 flow. Second operand 7 states. [2020-10-11 18:33:51,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:51,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:33:51,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:51,449 INFO L129 PetriNetUnfolder]: 7/87 cut-off events. [2020-10-11 18:33:51,450 INFO L130 PetriNetUnfolder]: For 99/105 co-relation queries the response was YES. [2020-10-11 18:33:51,450 INFO L80 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 87 events. 7/87 cut-off events. For 99/105 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 0 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 181. Up to 15 conditions per place. [2020-10-11 18:33:51,450 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2020-10-11 18:33:51,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 58 transitions, 256 flow [2020-10-11 18:33:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:33:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:33:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:33:51,452 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:33:51,452 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:33:51,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:33:51,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:51,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:33:51,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:33:51,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:33:51,455 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:33:51,455 INFO L185 Difference]: Start difference. First operand has 90 places, 60 transitions, 242 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:33:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 58 transitions, 256 flow [2020-10-11 18:33:51,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 58 transitions, 174 flow, removed 22 selfloop flow, removed 15 redundant places. [2020-10-11 18:33:51,457 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:33:51,458 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:33:51,458 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:33:51,458 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:33:51,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:51,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 18:33:51,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:33:51 BasicIcfg [2020-10-11 18:33:51,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:33:51,469 INFO L168 Benchmark]: Toolchain (without parser) took 7366.96 ms. Allocated memory was 253.8 MB in the beginning and 463.5 MB in the end (delta: 209.7 MB). Free memory was 209.7 MB in the beginning and 422.8 MB in the end (delta: -213.0 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:51,470 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:51,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.42 ms. Allocated memory was 253.8 MB in the beginning and 321.9 MB in the end (delta: 68.2 MB). Free memory was 209.7 MB in the beginning and 277.3 MB in the end (delta: -67.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:51,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.65 ms. Allocated memory is still 321.9 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:51,473 INFO L168 Benchmark]: Boogie Preprocessor took 25.78 ms. Allocated memory is still 321.9 MB. Free memory was 274.8 MB in the beginning and 272.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:51,478 INFO L168 Benchmark]: RCFGBuilder took 447.71 ms. Allocated memory is still 321.9 MB. Free memory was 272.2 MB in the beginning and 250.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:51,479 INFO L168 Benchmark]: TraceAbstraction took 6119.33 ms. Allocated memory was 321.9 MB in the beginning and 463.5 MB in the end (delta: 141.6 MB). Free memory was 250.1 MB in the beginning and 422.8 MB in the end (delta: -172.7 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:51,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 714.42 ms. Allocated memory was 253.8 MB in the beginning and 321.9 MB in the end (delta: 68.2 MB). Free memory was 209.7 MB in the beginning and 277.3 MB in the end (delta: -67.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.65 ms. Allocated memory is still 321.9 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.78 ms. Allocated memory is still 321.9 MB. Free memory was 274.8 MB in the beginning and 272.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 447.71 ms. Allocated memory is still 321.9 MB. Free memory was 272.2 MB in the beginning and 250.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6119.33 ms. Allocated memory was 321.9 MB in the beginning and 463.5 MB in the end (delta: 141.6 MB). Free memory was 250.1 MB in the beginning and 422.8 MB in the end (delta: -172.7 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 300 SDtfs, 326 SDslu, 849 SDs, 0 SdLazy, 828 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 453 ConstructedInterpolants, 0 QuantifiedInterpolants, 52963 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...