/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:08:59,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:08:59,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:08:59,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:08:59,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:08:59,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:08:59,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:08:59,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:08:59,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:08:59,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:08:59,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:08:59,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:08:59,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:08:59,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:08:59,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:08:59,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:08:59,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:08:59,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:08:59,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:08:59,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:08:59,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:08:59,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:08:59,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:08:59,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:08:59,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:08:59,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:08:59,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:08:59,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:08:59,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:08:59,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:08:59,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:08:59,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:08:59,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:08:59,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:08:59,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:08:59,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:08:59,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:08:59,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:08:59,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:08:59,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:08:59,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:08:59,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:08:59,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:08:59,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:08:59,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:08:59,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:08:59,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:08:59,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:08:59,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:08:59,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:08:59,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:08:59,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:08:59,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:08:59,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:08:59,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:08:59,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:08:59,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:08:59,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:08:59,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:08:59,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:08:59,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:08:59,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:08:59,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:08:59,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:08:59,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:08:59,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:08:59,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:08:59,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:08:59,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:08:59,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:08:59,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:09:00,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:09:00,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:09:00,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:09:00,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:09:00,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:09:00,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-10-16 05:09:00,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab980dbf/013810fee9d74f2a8d647de661267496/FLAG820514145 [2020-10-16 05:09:00,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:09:00,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-10-16 05:09:00,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab980dbf/013810fee9d74f2a8d647de661267496/FLAG820514145 [2020-10-16 05:09:01,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab980dbf/013810fee9d74f2a8d647de661267496 [2020-10-16 05:09:01,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:09:01,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:09:01,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:09:01,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:09:01,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:09:01,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01, skipping insertion in model container [2020-10-16 05:09:01,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:09:01,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:09:01,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:09:01,637 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:09:01,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:09:01,770 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:09:01,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01 WrapperNode [2020-10-16 05:09:01,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:09:01,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:09:01,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:09:01,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:09:01,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:09:01,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:09:01,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:09:01,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:09:01,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (1/1) ... [2020-10-16 05:09:01,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:09:01,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:09:01,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:09:01,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:09:01,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (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 [2020-10-16 05:09:01,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:09:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:09:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:09:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:09:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:09:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:09:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:09:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:09:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:09:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:09:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 05:09:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 05:09:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:09:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:09:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:09:01,920 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:09:02,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:09:02,284 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:09:02,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:09:02 BoogieIcfgContainer [2020-10-16 05:09:02,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:09:02,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:09:02,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:09:02,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:09:02,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:09:01" (1/3) ... [2020-10-16 05:09:02,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cff04a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:09:02, skipping insertion in model container [2020-10-16 05:09:02,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:01" (2/3) ... [2020-10-16 05:09:02,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cff04a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:09:02, skipping insertion in model container [2020-10-16 05:09:02,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:09:02" (3/3) ... [2020-10-16 05:09:02,302 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-10-16 05:09:02,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:09:02,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:09:02,324 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:09:02,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,359 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,359 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,360 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,360 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,366 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,366 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,367 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,367 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,367 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,367 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,374 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,375 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,375 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,375 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:02,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:09:02,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:09:02,431 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:09:02,431 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:09:02,431 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:09:02,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:09:02,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:09:02,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:09:02,432 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:09:02,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-10-16 05:09:02,496 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-10-16 05:09:02,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:02,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 05:09:02,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 82 transitions, 184 flow [2020-10-16 05:09:02,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 65 transitions, 142 flow [2020-10-16 05:09:02,511 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:09:02,514 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 65 transitions, 142 flow [2020-10-16 05:09:02,517 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 65 transitions, 142 flow [2020-10-16 05:09:02,517 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions, 142 flow [2020-10-16 05:09:02,544 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2020-10-16 05:09:02,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:02,548 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 1/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 05:09:02,554 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 05:09:04,086 INFO L132 LiptonReduction]: Checked pairs total: 2240 [2020-10-16 05:09:04,087 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 05:09:04,090 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1581 [2020-10-16 05:09:04,099 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:09:04,100 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:04,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:04,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:04,101 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1876924757, now seen corresponding path program 1 times [2020-10-16 05:09:04,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:04,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573738816] [2020-10-16 05:09:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:04,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573738816] [2020-10-16 05:09:04,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:04,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:09:04,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396999334] [2020-10-16 05:09:04,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:09:04,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:04,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:09:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:09:04,408 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2020-10-16 05:09:04,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states. [2020-10-16 05:09:04,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:04,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2020-10-16 05:09:04,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:04,456 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-10-16 05:09:04,457 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:04,457 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:09:04,458 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 05:09:04,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 58 flow [2020-10-16 05:09:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:09:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:09:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2020-10-16 05:09:04,476 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2020-10-16 05:09:04,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2020-10-16 05:09:04,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2020-10-16 05:09:04,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:04,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2020-10-16 05:09:04,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:09:04,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:09:04,495 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:09:04,497 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 342 transitions. [2020-10-16 05:09:04,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 58 flow [2020-10-16 05:09:04,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:09:04,503 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 56 flow [2020-10-16 05:09:04,506 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 05:09:04,507 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 05:09:04,507 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 56 flow [2020-10-16 05:09:04,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:09:04,508 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:04,508 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:04,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:09:04,508 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:04,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:04,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1944873586, now seen corresponding path program 1 times [2020-10-16 05:09:04,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:04,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507337280] [2020-10-16 05:09:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:04,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507337280] [2020-10-16 05:09:04,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:04,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:09:04,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195444055] [2020-10-16 05:09:04,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:09:04,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:09:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:09:04,589 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 05:09:04,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states. [2020-10-16 05:09:04,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:04,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 05:09:04,589 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:04,629 INFO L129 PetriNetUnfolder]: 5/41 cut-off events. [2020-10-16 05:09:04,630 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2020-10-16 05:09:04,630 INFO L80 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 41 events. 5/41 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 105 event pairs, 1 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2020-10-16 05:09:04,631 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 4 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 05:09:04,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 81 flow [2020-10-16 05:09:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:09:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:09:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2020-10-16 05:09:04,635 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8206106870229007 [2020-10-16 05:09:04,636 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2020-10-16 05:09:04,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2020-10-16 05:09:04,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:04,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2020-10-16 05:09:04,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:09:04,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:09:04,641 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:09:04,641 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states and 430 transitions. [2020-10-16 05:09:04,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 81 flow [2020-10-16 05:09:04,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 75 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:09:04,643 INFO L241 Difference]: Finished difference. Result has 35 places, 20 transitions, 66 flow [2020-10-16 05:09:04,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2020-10-16 05:09:04,643 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 05:09:04,644 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 66 flow [2020-10-16 05:09:04,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:09:04,644 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:04,644 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:04,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:09:04,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash 161151609, now seen corresponding path program 1 times [2020-10-16 05:09:04,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:04,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942111005] [2020-10-16 05:09:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:04,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942111005] [2020-10-16 05:09:04,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:04,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:09:04,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528847954] [2020-10-16 05:09:04,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:09:04,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:04,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:09:04,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:09:04,696 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2020-10-16 05:09:04,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 66 flow. Second operand 3 states. [2020-10-16 05:09:04,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:04,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2020-10-16 05:09:04,697 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:04,714 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-10-16 05:09:04,714 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:09:04,714 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 20 events. 0/20 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:09:04,715 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 05:09:04,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 20 transitions, 72 flow [2020-10-16 05:09:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:09:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:09:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 05:09:04,718 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8575063613231552 [2020-10-16 05:09:04,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 05:09:04,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 05:09:04,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:04,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 05:09:04,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:09:04,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:09:04,722 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:09:04,723 INFO L185 Difference]: Start difference. First operand has 35 places, 20 transitions, 66 flow. Second operand 3 states and 337 transitions. [2020-10-16 05:09:04,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 20 transitions, 72 flow [2020-10-16 05:09:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 58 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 05:09:04,725 INFO L241 Difference]: Finished difference. Result has 33 places, 20 transitions, 60 flow [2020-10-16 05:09:04,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2020-10-16 05:09:04,725 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2020-10-16 05:09:04,725 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 60 flow [2020-10-16 05:09:04,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:09:04,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:04,726 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:04,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:09:04,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash 700703623, now seen corresponding path program 1 times [2020-10-16 05:09:04,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:04,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107375441] [2020-10-16 05:09:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:04,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107375441] [2020-10-16 05:09:04,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:04,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:09:04,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869118336] [2020-10-16 05:09:04,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:09:04,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:04,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:09:04,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:09:04,831 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 05:09:04,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 60 flow. Second operand 4 states. [2020-10-16 05:09:04,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:04,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 05:09:04,832 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:04,862 INFO L129 PetriNetUnfolder]: 5/40 cut-off events. [2020-10-16 05:09:04,863 INFO L130 PetriNetUnfolder]: For 22/29 co-relation queries the response was YES. [2020-10-16 05:09:04,863 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 40 events. 5/40 cut-off events. For 22/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 2 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2020-10-16 05:09:04,864 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 4 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 05:09:04,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 85 flow [2020-10-16 05:09:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:09:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:09:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2020-10-16 05:09:04,866 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8206106870229007 [2020-10-16 05:09:04,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2020-10-16 05:09:04,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2020-10-16 05:09:04,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:04,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2020-10-16 05:09:04,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:09:04,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:09:04,869 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:09:04,870 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 60 flow. Second operand 4 states and 430 transitions. [2020-10-16 05:09:04,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 85 flow [2020-10-16 05:09:04,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:09:04,872 INFO L241 Difference]: Finished difference. Result has 36 places, 20 transitions, 70 flow [2020-10-16 05:09:04,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2020-10-16 05:09:04,872 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2020-10-16 05:09:04,872 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 70 flow [2020-10-16 05:09:04,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:09:04,873 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:04,873 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:04,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:09:04,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 475869839, now seen corresponding path program 1 times [2020-10-16 05:09:04,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:04,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125179882] [2020-10-16 05:09:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:04,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125179882] [2020-10-16 05:09:04,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:04,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:09:04,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689747666] [2020-10-16 05:09:04,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:09:04,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:04,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:09:04,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:09:04,956 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 05:09:04,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:09:04,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:04,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 05:09:04,957 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:05,022 INFO L129 PetriNetUnfolder]: 90/165 cut-off events. [2020-10-16 05:09:05,023 INFO L130 PetriNetUnfolder]: For 298/311 co-relation queries the response was YES. [2020-10-16 05:09:05,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 165 events. 90/165 cut-off events. For 298/311 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 648 event pairs, 46 based on Foata normal form. 18/177 useless extension candidates. Maximal degree in co-relation 387. Up to 119 conditions per place. [2020-10-16 05:09:05,026 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 5 changer transitions 9/33 dead transitions. [2020-10-16 05:09:05,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 136 flow [2020-10-16 05:09:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:09:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:09:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2020-10-16 05:09:05,029 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8045801526717558 [2020-10-16 05:09:05,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2020-10-16 05:09:05,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2020-10-16 05:09:05,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:05,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2020-10-16 05:09:05,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:09:05,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:09:05,034 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:09:05,034 INFO L185 Difference]: Start difference. First operand has 36 places, 20 transitions, 70 flow. Second operand 5 states and 527 transitions. [2020-10-16 05:09:05,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 136 flow [2020-10-16 05:09:05,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 124 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:09:05,037 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 103 flow [2020-10-16 05:09:05,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 05:09:05,037 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2020-10-16 05:09:05,037 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 103 flow [2020-10-16 05:09:05,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:09:05,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:05,038 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:05,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:09:05,038 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1701470509, now seen corresponding path program 1 times [2020-10-16 05:09:05,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:05,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608197176] [2020-10-16 05:09:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:05,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608197176] [2020-10-16 05:09:05,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:05,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:09:05,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734209759] [2020-10-16 05:09:05,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:09:05,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:05,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:09:05,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:09:05,109 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 05:09:05,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 103 flow. Second operand 5 states. [2020-10-16 05:09:05,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:05,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 05:09:05,110 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:05,182 INFO L129 PetriNetUnfolder]: 66/132 cut-off events. [2020-10-16 05:09:05,182 INFO L130 PetriNetUnfolder]: For 234/287 co-relation queries the response was YES. [2020-10-16 05:09:05,183 INFO L80 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 132 events. 66/132 cut-off events. For 234/287 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 471 event pairs, 14 based on Foata normal form. 24/153 useless extension candidates. Maximal degree in co-relation 501. Up to 108 conditions per place. [2020-10-16 05:09:05,185 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 9 changer transitions 9/37 dead transitions. [2020-10-16 05:09:05,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 227 flow [2020-10-16 05:09:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:09:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:09:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 632 transitions. [2020-10-16 05:09:05,188 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8040712468193384 [2020-10-16 05:09:05,188 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 632 transitions. [2020-10-16 05:09:05,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 632 transitions. [2020-10-16 05:09:05,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:05,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 632 transitions. [2020-10-16 05:09:05,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:09:05,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:09:05,192 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:09:05,192 INFO L185 Difference]: Start difference. First operand has 39 places, 24 transitions, 103 flow. Second operand 6 states and 632 transitions. [2020-10-16 05:09:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 227 flow [2020-10-16 05:09:05,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 220 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:09:05,196 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 168 flow [2020-10-16 05:09:05,196 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2020-10-16 05:09:05,196 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2020-10-16 05:09:05,196 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 168 flow [2020-10-16 05:09:05,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:09:05,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:05,197 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:05,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:09:05,197 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:05,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1720867716, now seen corresponding path program 1 times [2020-10-16 05:09:05,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:05,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859982174] [2020-10-16 05:09:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:05,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859982174] [2020-10-16 05:09:05,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:05,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:09:05,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832425452] [2020-10-16 05:09:05,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:09:05,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:05,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:09:05,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:09:05,273 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 05:09:05,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 168 flow. Second operand 6 states. [2020-10-16 05:09:05,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:05,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 05:09:05,274 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:05,346 INFO L129 PetriNetUnfolder]: 36/86 cut-off events. [2020-10-16 05:09:05,346 INFO L130 PetriNetUnfolder]: For 286/341 co-relation queries the response was YES. [2020-10-16 05:09:05,347 INFO L80 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 86 events. 36/86 cut-off events. For 286/341 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 249 event pairs, 2 based on Foata normal form. 27/111 useless extension candidates. Maximal degree in co-relation 429. Up to 68 conditions per place. [2020-10-16 05:09:05,348 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 13 changer transitions 9/41 dead transitions. [2020-10-16 05:09:05,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 350 flow [2020-10-16 05:09:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:09:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:09:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 737 transitions. [2020-10-16 05:09:05,352 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8037077426390403 [2020-10-16 05:09:05,352 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 737 transitions. [2020-10-16 05:09:05,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 737 transitions. [2020-10-16 05:09:05,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:05,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 737 transitions. [2020-10-16 05:09:05,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:09:05,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:09:05,357 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:09:05,357 INFO L185 Difference]: Start difference. First operand has 43 places, 28 transitions, 168 flow. Second operand 7 states and 737 transitions. [2020-10-16 05:09:05,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 350 flow [2020-10-16 05:09:05,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 288 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 05:09:05,361 INFO L241 Difference]: Finished difference. Result has 46 places, 32 transitions, 218 flow [2020-10-16 05:09:05,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2020-10-16 05:09:05,362 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2020-10-16 05:09:05,362 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 218 flow [2020-10-16 05:09:05,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:09:05,362 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:05,362 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:05,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:09:05,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1302176280, now seen corresponding path program 1 times [2020-10-16 05:09:05,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:05,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316056176] [2020-10-16 05:09:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:05,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316056176] [2020-10-16 05:09:05,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:05,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:09:05,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025975571] [2020-10-16 05:09:05,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:09:05,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:09:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:09:05,403 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 05:09:05,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 218 flow. Second operand 4 states. [2020-10-16 05:09:05,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:05,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 05:09:05,404 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:05,441 INFO L129 PetriNetUnfolder]: 51/122 cut-off events. [2020-10-16 05:09:05,441 INFO L130 PetriNetUnfolder]: For 449/517 co-relation queries the response was YES. [2020-10-16 05:09:05,442 INFO L80 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 122 events. 51/122 cut-off events. For 449/517 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 440 event pairs, 3 based on Foata normal form. 13/126 useless extension candidates. Maximal degree in co-relation 531. Up to 88 conditions per place. [2020-10-16 05:09:05,443 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 5 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2020-10-16 05:09:05,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 237 flow [2020-10-16 05:09:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:09:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:09:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2020-10-16 05:09:05,446 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.816793893129771 [2020-10-16 05:09:05,446 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2020-10-16 05:09:05,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2020-10-16 05:09:05,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:05,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2020-10-16 05:09:05,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:09:05,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:09:05,449 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:09:05,450 INFO L185 Difference]: Start difference. First operand has 46 places, 32 transitions, 218 flow. Second operand 4 states and 428 transitions. [2020-10-16 05:09:05,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 237 flow [2020-10-16 05:09:05,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 183 flow, removed 18 selfloop flow, removed 5 redundant places. [2020-10-16 05:09:05,454 INFO L241 Difference]: Finished difference. Result has 44 places, 33 transitions, 177 flow [2020-10-16 05:09:05,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2020-10-16 05:09:05,454 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2020-10-16 05:09:05,455 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 177 flow [2020-10-16 05:09:05,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:09:05,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:05,455 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:05,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:09:05,455 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:05,456 INFO L82 PathProgramCache]: Analyzing trace with hash -795049348, now seen corresponding path program 2 times [2020-10-16 05:09:05,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:05,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912675623] [2020-10-16 05:09:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:05,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912675623] [2020-10-16 05:09:05,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:05,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:09:05,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641082021] [2020-10-16 05:09:05,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:09:05,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:05,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:09:05,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:09:05,534 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 05:09:05,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 177 flow. Second operand 7 states. [2020-10-16 05:09:05,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:05,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 05:09:05,535 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:05,642 INFO L129 PetriNetUnfolder]: 40/100 cut-off events. [2020-10-16 05:09:05,642 INFO L130 PetriNetUnfolder]: For 229/360 co-relation queries the response was YES. [2020-10-16 05:09:05,643 INFO L80 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 100 events. 40/100 cut-off events. For 229/360 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 327 event pairs, 0 based on Foata normal form. 47/140 useless extension candidates. Maximal degree in co-relation 381. Up to 51 conditions per place. [2020-10-16 05:09:05,643 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 2 selfloop transitions, 17 changer transitions 6/38 dead transitions. [2020-10-16 05:09:05,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 273 flow [2020-10-16 05:09:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 05:09:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 05:09:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 834 transitions. [2020-10-16 05:09:05,647 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7958015267175572 [2020-10-16 05:09:05,647 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 834 transitions. [2020-10-16 05:09:05,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 834 transitions. [2020-10-16 05:09:05,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:05,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 834 transitions. [2020-10-16 05:09:05,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 05:09:05,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 05:09:05,652 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 05:09:05,653 INFO L185 Difference]: Start difference. First operand has 44 places, 33 transitions, 177 flow. Second operand 8 states and 834 transitions. [2020-10-16 05:09:05,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 273 flow [2020-10-16 05:09:05,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 256 flow, removed 8 selfloop flow, removed 1 redundant places. [2020-10-16 05:09:05,655 INFO L241 Difference]: Finished difference. Result has 53 places, 32 transitions, 210 flow [2020-10-16 05:09:05,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2020-10-16 05:09:05,656 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2020-10-16 05:09:05,656 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 210 flow [2020-10-16 05:09:05,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:09:05,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:05,657 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] [2020-10-16 05:09:05,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:09:05,657 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:05,657 INFO L82 PathProgramCache]: Analyzing trace with hash 411071804, now seen corresponding path program 1 times [2020-10-16 05:09:05,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:05,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066085232] [2020-10-16 05:09:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:09:05,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066085232] [2020-10-16 05:09:05,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:05,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:09:05,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392522367] [2020-10-16 05:09:05,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:09:05,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:05,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:09:05,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:09:05,692 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 05:09:05,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 210 flow. Second operand 4 states. [2020-10-16 05:09:05,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:05,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 05:09:05,693 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:05,716 INFO L129 PetriNetUnfolder]: 32/85 cut-off events. [2020-10-16 05:09:05,716 INFO L130 PetriNetUnfolder]: For 162/188 co-relation queries the response was YES. [2020-10-16 05:09:05,717 INFO L80 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 85 events. 32/85 cut-off events. For 162/188 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 269 event pairs, 0 based on Foata normal form. 3/80 useless extension candidates. Maximal degree in co-relation 293. Up to 34 conditions per place. [2020-10-16 05:09:05,717 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2020-10-16 05:09:05,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 33 transitions, 214 flow [2020-10-16 05:09:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:09:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:09:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2020-10-16 05:09:05,720 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8148854961832062 [2020-10-16 05:09:05,720 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2020-10-16 05:09:05,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2020-10-16 05:09:05,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:05,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2020-10-16 05:09:05,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:09:05,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:09:05,723 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:09:05,723 INFO L185 Difference]: Start difference. First operand has 53 places, 32 transitions, 210 flow. Second operand 4 states and 427 transitions. [2020-10-16 05:09:05,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 33 transitions, 214 flow [2020-10-16 05:09:05,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 159 flow, removed 12 selfloop flow, removed 6 redundant places. [2020-10-16 05:09:05,726 INFO L241 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2020-10-16 05:09:05,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2020-10-16 05:09:05,726 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2020-10-16 05:09:05,726 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2020-10-16 05:09:05,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:09:05,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:09:05,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:09:05 BasicIcfg [2020-10-16 05:09:05,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:09:05,734 INFO L168 Benchmark]: Toolchain (without parser) took 4659.83 ms. Allocated memory was 252.7 MB in the beginning and 429.9 MB in the end (delta: 177.2 MB). Free memory was 207.9 MB in the beginning and 376.1 MB in the end (delta: -168.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:05,735 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:09:05,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.25 ms. Allocated memory was 252.7 MB in the beginning and 316.1 MB in the end (delta: 63.4 MB). Free memory was 207.9 MB in the beginning and 269.3 MB in the end (delta: -61.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:05,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 316.1 MB. Free memory was 269.3 MB in the beginning and 266.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:05,737 INFO L168 Benchmark]: Boogie Preprocessor took 28.95 ms. Allocated memory is still 316.1 MB. Free memory was 266.8 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:05,738 INFO L168 Benchmark]: RCFGBuilder took 441.93 ms. Allocated memory is still 316.1 MB. Free memory was 264.3 MB in the beginning and 239.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:05,739 INFO L168 Benchmark]: TraceAbstraction took 3442.71 ms. Allocated memory was 316.1 MB in the beginning and 429.9 MB in the end (delta: 113.8 MB). Free memory was 239.9 MB in the beginning and 376.1 MB in the end (delta: -136.2 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:09:05,742 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 696.25 ms. Allocated memory was 252.7 MB in the beginning and 316.1 MB in the end (delta: 63.4 MB). Free memory was 207.9 MB in the beginning and 269.3 MB in the end (delta: -61.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 316.1 MB. Free memory was 269.3 MB in the beginning and 266.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.95 ms. Allocated memory is still 316.1 MB. Free memory was 266.8 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 441.93 ms. Allocated memory is still 316.1 MB. Free memory was 264.3 MB in the beginning and 239.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3442.71 ms. Allocated memory was 316.1 MB in the beginning and 429.9 MB in the end (delta: 113.8 MB). Free memory was 239.9 MB in the beginning and 376.1 MB in the end (delta: -136.2 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 843 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 90 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 77 PlacesBefore, 33 PlacesAfterwards, 65 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 2240 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 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: 3.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 33 SDtfs, 28 SDslu, 23 SDs, 0 SdLazy, 199 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=7, 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, 0.5s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 5821 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...