/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/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:38:09,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:38:09,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:38:09,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:38:09,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:38:09,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:38:09,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:38:09,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:38:09,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:38:09,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:38:09,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:38:09,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:38:09,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:38:09,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:38:09,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:38:09,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:38:09,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:38:09,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:38:09,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:38:09,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:38:09,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:38:09,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:38:09,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:38:09,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:38:09,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:38:09,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:38:09,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:38:09,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:38:09,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:38:09,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:38:09,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:38:09,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:38:09,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:38:09,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:38:09,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:38:09,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:38:09,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:38:09,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:38:09,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:38:09,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:38:09,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:38:09,844 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 18:38:09,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:38:09,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:38:09,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:38:09,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:38:09,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:38:09,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:38:09,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:38:09,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:38:09,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:38:09,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:38:09,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:38:09,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:38:09,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:38:09,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:38:09,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:38:09,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:38:09,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:38:09,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:38:09,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:38:09,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:38:09,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:38:09,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:38:09,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:38:09,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:38:09,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:38:09,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:38:09,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:38:09,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:38:09,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:38:09,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:38:10,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:38:10,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:38:10,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:38:10,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:38:10,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:38:10,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-10-11 18:38:10,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9651870/612b2ef59b414f4ea8eac66922b1ac0c/FLAG1f4f0e430 [2020-10-11 18:38:10,800 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:38:10,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-10-11 18:38:10,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9651870/612b2ef59b414f4ea8eac66922b1ac0c/FLAG1f4f0e430 [2020-10-11 18:38:11,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9651870/612b2ef59b414f4ea8eac66922b1ac0c [2020-10-11 18:38:11,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:38:11,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:38:11,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:38:11,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:38:11,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:38:11,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed19789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11, skipping insertion in model container [2020-10-11 18:38:11,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:38:11,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:38:11,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:38:11,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:38:11,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:38:11,801 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:38:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11 WrapperNode [2020-10-11 18:38:11,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:38:11,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:38:11,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:38:11,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:38:11,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:38:11,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:38:11,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:38:11,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:38:11,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (1/1) ... [2020-10-11 18:38:11,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:38:11,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:38:11,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:38:11,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:38:11,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (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 18:38:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:38:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:38:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:38:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:38:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:38:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:38:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:38:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:38:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:38:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:38:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:38:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:38:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:38:11,956 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 18:38:12,274 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:38:12,274 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:38:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:38:12 BoogieIcfgContainer [2020-10-11 18:38:12,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:38:12,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:38:12,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:38:12,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:38:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:38:11" (1/3) ... [2020-10-11 18:38:12,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771e8a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:38:12, skipping insertion in model container [2020-10-11 18:38:12,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:11" (2/3) ... [2020-10-11 18:38:12,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771e8a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:38:12, skipping insertion in model container [2020-10-11 18:38:12,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:38:12" (3/3) ... [2020-10-11 18:38:12,286 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-10-11 18:38:12,300 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:38:12,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:38:12,310 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:38:12,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,355 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,356 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,359 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,359 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:12,378 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:38:12,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:38:12,400 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:38:12,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:38:12,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:38:12,401 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:38:12,401 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:38:12,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:38:12,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:38:12,417 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-11 18:38:12,466 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-11 18:38:12,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:38:12,472 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-11 18:38:12,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 67 transitions, 149 flow [2020-10-11 18:38:12,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 53 transitions, 115 flow [2020-10-11 18:38:12,499 INFO L129 PetriNetUnfolder]: 1/52 cut-off events. [2020-10-11 18:38:12,499 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:38:12,499 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:12,501 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] [2020-10-11 18:38:12,501 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:12,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1611632849, now seen corresponding path program 1 times [2020-10-11 18:38:12,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:12,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419504490] [2020-10-11 18:38:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:12,954 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 18:38:12,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419504490] [2020-10-11 18:38:12,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:12,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:12,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500561901] [2020-10-11 18:38:12,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:12,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:12,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:12,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:13,134 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 67 [2020-10-11 18:38:13,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 115 flow. Second operand 6 states. [2020-10-11 18:38:13,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:13,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 67 [2020-10-11 18:38:13,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:13,302 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-11 18:38:13,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:38:13,304 INFO L80 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 4/78 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2020-10-11 18:38:13,306 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 6 selfloop transitions, 2 changer transitions 11/62 dead transitions. [2020-10-11 18:38:13,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 169 flow [2020-10-11 18:38:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 535 transitions. [2020-10-11 18:38:13,327 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872305140961857 [2020-10-11 18:38:13,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 535 transitions. [2020-10-11 18:38:13,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 535 transitions. [2020-10-11 18:38:13,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:13,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 535 transitions. [2020-10-11 18:38:13,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:13,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:13,369 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:13,372 INFO L185 Difference]: Start difference. First operand has 62 places, 53 transitions, 115 flow. Second operand 9 states and 535 transitions. [2020-10-11 18:38:13,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 169 flow [2020-10-11 18:38:13,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:38:13,382 INFO L241 Difference]: Finished difference. Result has 74 places, 51 transitions, 128 flow [2020-10-11 18:38:13,385 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=128, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2020-10-11 18:38:13,386 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2020-10-11 18:38:13,387 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 128 flow [2020-10-11 18:38:13,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:13,387 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:13,387 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 18:38:13,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:38:13,388 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash -682961102, now seen corresponding path program 1 times [2020-10-11 18:38:13,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:13,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090461418] [2020-10-11 18:38:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:13,575 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 18:38:13,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090461418] [2020-10-11 18:38:13,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:13,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:13,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689620241] [2020-10-11 18:38:13,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:13,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:13,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:13,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:13,773 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 67 [2020-10-11 18:38:13,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 128 flow. Second operand 6 states. [2020-10-11 18:38:13,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:13,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 67 [2020-10-11 18:38:13,775 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:13,923 INFO L129 PetriNetUnfolder]: 24/129 cut-off events. [2020-10-11 18:38:13,923 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2020-10-11 18:38:13,925 INFO L80 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 129 events. 24/129 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 410 event pairs, 5 based on Foata normal form. 4/131 useless extension candidates. Maximal degree in co-relation 217. Up to 31 conditions per place. [2020-10-11 18:38:13,926 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 8 selfloop transitions, 3 changer transitions 19/72 dead transitions. [2020-10-11 18:38:13,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 248 flow [2020-10-11 18:38:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 536 transitions. [2020-10-11 18:38:13,929 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:38:13,930 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 536 transitions. [2020-10-11 18:38:13,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 536 transitions. [2020-10-11 18:38:13,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:13,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 536 transitions. [2020-10-11 18:38:13,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:13,935 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:13,935 INFO L185 Difference]: Start difference. First operand has 74 places, 51 transitions, 128 flow. Second operand 9 states and 536 transitions. [2020-10-11 18:38:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 248 flow [2020-10-11 18:38:13,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 216 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:38:13,939 INFO L241 Difference]: Finished difference. Result has 74 places, 53 transitions, 155 flow [2020-10-11 18:38:13,940 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=155, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2020-10-11 18:38:13,941 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2020-10-11 18:38:13,941 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 155 flow [2020-10-11 18:38:13,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:13,941 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:13,941 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] [2020-10-11 18:38:13,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:38:13,942 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash 841414325, now seen corresponding path program 1 times [2020-10-11 18:38:13,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:13,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232184300] [2020-10-11 18:38:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:14,053 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 18:38:14,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232184300] [2020-10-11 18:38:14,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:14,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:14,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411524585] [2020-10-11 18:38:14,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:14,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:14,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:14,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:14,179 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 67 [2020-10-11 18:38:14,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 155 flow. Second operand 6 states. [2020-10-11 18:38:14,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:14,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 67 [2020-10-11 18:38:14,180 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:14,328 INFO L129 PetriNetUnfolder]: 74/281 cut-off events. [2020-10-11 18:38:14,328 INFO L130 PetriNetUnfolder]: For 282/284 co-relation queries the response was YES. [2020-10-11 18:38:14,331 INFO L80 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 281 events. 74/281 cut-off events. For 282/284 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1477 event pairs, 27 based on Foata normal form. 10/278 useless extension candidates. Maximal degree in co-relation 613. Up to 60 conditions per place. [2020-10-11 18:38:14,333 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 8 selfloop transitions, 3 changer transitions 19/74 dead transitions. [2020-10-11 18:38:14,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 277 flow [2020-10-11 18:38:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 536 transitions. [2020-10-11 18:38:14,337 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:38:14,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 536 transitions. [2020-10-11 18:38:14,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 536 transitions. [2020-10-11 18:38:14,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:14,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 536 transitions. [2020-10-11 18:38:14,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:14,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:14,341 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:14,341 INFO L185 Difference]: Start difference. First operand has 74 places, 53 transitions, 155 flow. Second operand 9 states and 536 transitions. [2020-10-11 18:38:14,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 277 flow [2020-10-11 18:38:14,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 260 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:38:14,346 INFO L241 Difference]: Finished difference. Result has 79 places, 55 transitions, 189 flow [2020-10-11 18:38:14,347 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2020-10-11 18:38:14,347 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2020-10-11 18:38:14,347 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 189 flow [2020-10-11 18:38:14,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:14,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:14,348 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] [2020-10-11 18:38:14,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:38:14,348 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:14,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:14,349 INFO L82 PathProgramCache]: Analyzing trace with hash -606767771, now seen corresponding path program 1 times [2020-10-11 18:38:14,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:14,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425603880] [2020-10-11 18:38:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:14,487 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 18:38:14,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425603880] [2020-10-11 18:38:14,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:14,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:14,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834468288] [2020-10-11 18:38:14,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:14,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:14,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:14,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:14,755 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2020-10-11 18:38:14,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 189 flow. Second operand 7 states. [2020-10-11 18:38:14,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:14,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2020-10-11 18:38:14,756 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:14,888 INFO L129 PetriNetUnfolder]: 66/238 cut-off events. [2020-10-11 18:38:14,889 INFO L130 PetriNetUnfolder]: For 688/756 co-relation queries the response was YES. [2020-10-11 18:38:14,891 INFO L80 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 238 events. 66/238 cut-off events. For 688/756 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1105 event pairs, 21 based on Foata normal form. 10/238 useless extension candidates. Maximal degree in co-relation 787. Up to 59 conditions per place. [2020-10-11 18:38:14,893 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 10 selfloop transitions, 5 changer transitions 11/68 dead transitions. [2020-10-11 18:38:14,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 350 flow [2020-10-11 18:38:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:38:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:38:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 405 transitions. [2020-10-11 18:38:14,896 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8635394456289979 [2020-10-11 18:38:14,896 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 405 transitions. [2020-10-11 18:38:14,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 405 transitions. [2020-10-11 18:38:14,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:14,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 405 transitions. [2020-10-11 18:38:14,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:38:14,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:38:14,900 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:38:14,900 INFO L185 Difference]: Start difference. First operand has 79 places, 55 transitions, 189 flow. Second operand 7 states and 405 transitions. [2020-10-11 18:38:14,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 350 flow [2020-10-11 18:38:14,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 337 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-11 18:38:14,912 INFO L241 Difference]: Finished difference. Result has 79 places, 55 transitions, 203 flow [2020-10-11 18:38:14,913 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2020-10-11 18:38:14,920 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2020-10-11 18:38:14,922 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 203 flow [2020-10-11 18:38:14,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:14,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:14,922 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] [2020-10-11 18:38:14,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:38:14,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:14,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1490106573, now seen corresponding path program 2 times [2020-10-11 18:38:14,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:14,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255201516] [2020-10-11 18:38:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:15,077 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 18:38:15,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255201516] [2020-10-11 18:38:15,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:15,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:15,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114504339] [2020-10-11 18:38:15,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:15,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:15,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:15,264 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2020-10-11 18:38:15,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 203 flow. Second operand 7 states. [2020-10-11 18:38:15,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:15,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2020-10-11 18:38:15,266 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:15,477 INFO L129 PetriNetUnfolder]: 40/236 cut-off events. [2020-10-11 18:38:15,477 INFO L130 PetriNetUnfolder]: For 602/656 co-relation queries the response was YES. [2020-10-11 18:38:15,479 INFO L80 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 236 events. 40/236 cut-off events. For 602/656 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1252 event pairs, 20 based on Foata normal form. 11/242 useless extension candidates. Maximal degree in co-relation 694. Up to 45 conditions per place. [2020-10-11 18:38:15,481 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 14 selfloop transitions, 3 changer transitions 17/76 dead transitions. [2020-10-11 18:38:15,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 76 transitions, 427 flow [2020-10-11 18:38:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 18:38:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-11 18:38:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 792 transitions. [2020-10-11 18:38:15,485 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8443496801705757 [2020-10-11 18:38:15,485 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 792 transitions. [2020-10-11 18:38:15,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 792 transitions. [2020-10-11 18:38:15,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:15,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 792 transitions. [2020-10-11 18:38:15,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-11 18:38:15,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-11 18:38:15,490 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-11 18:38:15,491 INFO L185 Difference]: Start difference. First operand has 79 places, 55 transitions, 203 flow. Second operand 14 states and 792 transitions. [2020-10-11 18:38:15,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 76 transitions, 427 flow [2020-10-11 18:38:15,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 373 flow, removed 21 selfloop flow, removed 6 redundant places. [2020-10-11 18:38:15,496 INFO L241 Difference]: Finished difference. Result has 95 places, 55 transitions, 218 flow [2020-10-11 18:38:15,496 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=218, PETRI_PLACES=95, PETRI_TRANSITIONS=55} [2020-10-11 18:38:15,496 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 33 predicate places. [2020-10-11 18:38:15,496 INFO L481 AbstractCegarLoop]: Abstraction has has 95 places, 55 transitions, 218 flow [2020-10-11 18:38:15,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:15,497 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:15,497 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] [2020-10-11 18:38:15,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:38:15,497 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash -74245294, now seen corresponding path program 1 times [2020-10-11 18:38:15,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:15,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159373960] [2020-10-11 18:38:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:15,579 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 18:38:15,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159373960] [2020-10-11 18:38:15,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:15,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:15,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001073291] [2020-10-11 18:38:15,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:15,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:15,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:15,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:15,736 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 67 [2020-10-11 18:38:15,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 55 transitions, 218 flow. Second operand 6 states. [2020-10-11 18:38:15,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:15,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 67 [2020-10-11 18:38:15,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:15,889 INFO L129 PetriNetUnfolder]: 25/224 cut-off events. [2020-10-11 18:38:15,889 INFO L130 PetriNetUnfolder]: For 982/1006 co-relation queries the response was YES. [2020-10-11 18:38:15,891 INFO L80 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 224 events. 25/224 cut-off events. For 982/1006 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1195 event pairs, 9 based on Foata normal form. 6/228 useless extension candidates. Maximal degree in co-relation 698. Up to 36 conditions per place. [2020-10-11 18:38:15,892 INFO L132 encePairwiseOnDemand]: 61/67 looper letters, 12 selfloop transitions, 3 changer transitions 10/69 dead transitions. [2020-10-11 18:38:15,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 69 transitions, 402 flow [2020-10-11 18:38:15,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 530 transitions. [2020-10-11 18:38:15,895 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.87893864013267 [2020-10-11 18:38:15,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 530 transitions. [2020-10-11 18:38:15,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 530 transitions. [2020-10-11 18:38:15,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:15,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 530 transitions. [2020-10-11 18:38:15,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:15,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:15,899 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:15,899 INFO L185 Difference]: Start difference. First operand has 95 places, 55 transitions, 218 flow. Second operand 9 states and 530 transitions. [2020-10-11 18:38:15,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 69 transitions, 402 flow [2020-10-11 18:38:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 69 transitions, 317 flow, removed 41 selfloop flow, removed 12 redundant places. [2020-10-11 18:38:15,905 INFO L241 Difference]: Finished difference. Result has 87 places, 55 transitions, 208 flow [2020-10-11 18:38:15,905 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=208, PETRI_PLACES=87, PETRI_TRANSITIONS=55} [2020-10-11 18:38:15,906 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2020-10-11 18:38:15,906 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 55 transitions, 208 flow [2020-10-11 18:38:15,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:15,906 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:15,906 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 18:38:15,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:38:15,907 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1414548148, now seen corresponding path program 1 times [2020-10-11 18:38:15,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:15,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473917965] [2020-10-11 18:38:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:15,997 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 18:38:15,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473917965] [2020-10-11 18:38:15,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:15,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:15,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775779910] [2020-10-11 18:38:15,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:15,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:15,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:16,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:16,114 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2020-10-11 18:38:16,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 55 transitions, 208 flow. Second operand 6 states. [2020-10-11 18:38:16,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:16,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2020-10-11 18:38:16,115 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:16,323 INFO L129 PetriNetUnfolder]: 328/856 cut-off events. [2020-10-11 18:38:16,323 INFO L130 PetriNetUnfolder]: For 923/947 co-relation queries the response was YES. [2020-10-11 18:38:16,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 856 events. 328/856 cut-off events. For 923/947 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6018 event pairs, 76 based on Foata normal form. 23/822 useless extension candidates. Maximal degree in co-relation 1841. Up to 276 conditions per place. [2020-10-11 18:38:16,332 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 10 selfloop transitions, 6 changer transitions 19/80 dead transitions. [2020-10-11 18:38:16,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 328 flow [2020-10-11 18:38:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 523 transitions. [2020-10-11 18:38:16,336 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.867330016583748 [2020-10-11 18:38:16,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 523 transitions. [2020-10-11 18:38:16,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 523 transitions. [2020-10-11 18:38:16,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:16,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 523 transitions. [2020-10-11 18:38:16,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:16,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:16,340 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:16,340 INFO L185 Difference]: Start difference. First operand has 87 places, 55 transitions, 208 flow. Second operand 9 states and 523 transitions. [2020-10-11 18:38:16,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 328 flow [2020-10-11 18:38:16,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 307 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:38:16,347 INFO L241 Difference]: Finished difference. Result has 88 places, 58 transitions, 243 flow [2020-10-11 18:38:16,347 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=243, PETRI_PLACES=88, PETRI_TRANSITIONS=58} [2020-10-11 18:38:16,348 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 26 predicate places. [2020-10-11 18:38:16,348 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 58 transitions, 243 flow [2020-10-11 18:38:16,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:16,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:16,348 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 18:38:16,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:38:16,349 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:16,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:16,349 INFO L82 PathProgramCache]: Analyzing trace with hash -220240394, now seen corresponding path program 1 times [2020-10-11 18:38:16,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:16,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676777908] [2020-10-11 18:38:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:16,440 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 18:38:16,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676777908] [2020-10-11 18:38:16,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:16,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:16,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234082656] [2020-10-11 18:38:16,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:16,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:16,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:16,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:16,590 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2020-10-11 18:38:16,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 58 transitions, 243 flow. Second operand 7 states. [2020-10-11 18:38:16,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:16,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2020-10-11 18:38:16,591 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:16,788 INFO L129 PetriNetUnfolder]: 170/508 cut-off events. [2020-10-11 18:38:16,788 INFO L130 PetriNetUnfolder]: For 1034/1166 co-relation queries the response was YES. [2020-10-11 18:38:16,790 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 508 events. 170/508 cut-off events. For 1034/1166 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3223 event pairs, 6 based on Foata normal form. 43/534 useless extension candidates. Maximal degree in co-relation 1756. Up to 237 conditions per place. [2020-10-11 18:38:16,792 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 6 selfloop transitions, 9 changer transitions 23/83 dead transitions. [2020-10-11 18:38:16,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 496 flow [2020-10-11 18:38:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:38:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:38:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 580 transitions. [2020-10-11 18:38:16,795 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8656716417910447 [2020-10-11 18:38:16,796 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 580 transitions. [2020-10-11 18:38:16,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 580 transitions. [2020-10-11 18:38:16,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:16,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 580 transitions. [2020-10-11 18:38:16,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:38:16,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:38:16,800 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:38:16,800 INFO L185 Difference]: Start difference. First operand has 88 places, 58 transitions, 243 flow. Second operand 10 states and 580 transitions. [2020-10-11 18:38:16,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 496 flow [2020-10-11 18:38:16,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 472 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:38:16,806 INFO L241 Difference]: Finished difference. Result has 94 places, 60 transitions, 297 flow [2020-10-11 18:38:16,807 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=94, PETRI_TRANSITIONS=60} [2020-10-11 18:38:16,807 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2020-10-11 18:38:16,807 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 60 transitions, 297 flow [2020-10-11 18:38:16,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:16,807 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:16,808 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] [2020-10-11 18:38:16,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:38:16,808 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:16,809 INFO L82 PathProgramCache]: Analyzing trace with hash 435724041, now seen corresponding path program 1 times [2020-10-11 18:38:16,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:16,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058862799] [2020-10-11 18:38:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:16,923 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 18:38:16,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058862799] [2020-10-11 18:38:16,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:16,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:38:16,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637442356] [2020-10-11 18:38:16,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:38:16,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:38:16,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:38:17,119 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2020-10-11 18:38:17,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 60 transitions, 297 flow. Second operand 8 states. [2020-10-11 18:38:17,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:17,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2020-10-11 18:38:17,120 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:17,298 INFO L129 PetriNetUnfolder]: 34/212 cut-off events. [2020-10-11 18:38:17,298 INFO L130 PetriNetUnfolder]: For 1002/1116 co-relation queries the response was YES. [2020-10-11 18:38:17,299 INFO L80 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 212 events. 34/212 cut-off events. For 1002/1116 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1132 event pairs, 0 based on Foata normal form. 43/252 useless extension candidates. Maximal degree in co-relation 811. Up to 76 conditions per place. [2020-10-11 18:38:17,300 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2020-10-11 18:38:17,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 65 transitions, 413 flow [2020-10-11 18:38:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:38:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:38:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2020-10-11 18:38:17,303 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8439620081411127 [2020-10-11 18:38:17,303 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2020-10-11 18:38:17,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2020-10-11 18:38:17,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:17,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2020-10-11 18:38:17,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:38:17,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:38:17,307 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:38:17,307 INFO L185 Difference]: Start difference. First operand has 94 places, 60 transitions, 297 flow. Second operand 11 states and 622 transitions. [2020-10-11 18:38:17,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 65 transitions, 413 flow [2020-10-11 18:38:17,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 65 transitions, 313 flow, removed 38 selfloop flow, removed 17 redundant places. [2020-10-11 18:38:17,312 INFO L241 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2020-10-11 18:38:17,312 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2020-10-11 18:38:17,312 INFO L341 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2020-10-11 18:38:17,312 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2020-10-11 18:38:17,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:38:17,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:38:17,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:38:17 BasicIcfg [2020-10-11 18:38:17,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:38:17,322 INFO L168 Benchmark]: Toolchain (without parser) took 6215.21 ms. Allocated memory was 252.2 MB in the beginning and 429.9 MB in the end (delta: 177.7 MB). Free memory was 207.4 MB in the beginning and 345.1 MB in the end (delta: -137.6 MB). Peak memory consumption was 40.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:17,323 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:38:17,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.48 ms. Allocated memory was 252.2 MB in the beginning and 315.6 MB in the end (delta: 63.4 MB). Free memory was 207.4 MB in the beginning and 270.9 MB in the end (delta: -63.5 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:17,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.67 ms. Allocated memory is still 315.6 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:17,325 INFO L168 Benchmark]: Boogie Preprocessor took 27.85 ms. Allocated memory is still 315.6 MB. Free memory was 268.4 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:17,326 INFO L168 Benchmark]: RCFGBuilder took 395.64 ms. Allocated memory is still 315.6 MB. Free memory was 265.9 MB in the beginning and 244.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:17,327 INFO L168 Benchmark]: TraceAbstraction took 5041.43 ms. Allocated memory was 315.6 MB in the beginning and 429.9 MB in the end (delta: 114.3 MB). Free memory was 244.0 MB in the beginning and 345.1 MB in the end (delta: -101.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:17,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 695.48 ms. Allocated memory was 252.2 MB in the beginning and 315.6 MB in the end (delta: 63.4 MB). Free memory was 207.4 MB in the beginning and 270.9 MB in the end (delta: -63.5 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.67 ms. Allocated memory is still 315.6 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.85 ms. Allocated memory is still 315.6 MB. Free memory was 268.4 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 395.64 ms. Allocated memory is still 315.6 MB. Free memory was 265.9 MB in the beginning and 244.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5041.43 ms. Allocated memory was 315.6 MB in the beginning and 429.9 MB in the end (delta: 114.3 MB). Free memory was 244.0 MB in the beginning and 345.1 MB in the end (delta: -101.1 MB). Peak memory consumption was 13.2 MB. 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, 66 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: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 260 SDslu, 555 SDs, 0 SdLazy, 589 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=8, 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, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 37823 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...