/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:52:44,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:52:44,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:52:44,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:52:44,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:52:44,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:52:44,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:52:44,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:52:44,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:52:44,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:52:44,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:52:44,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:52:44,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:52:44,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:52:44,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:52:44,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:52:44,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:52:44,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:52:44,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:52:44,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:52:44,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:52:44,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:52:44,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:52:44,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:52:44,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:52:44,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:52:44,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:52:44,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:52:44,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:52:44,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:52:44,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:52:44,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:52:44,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:52:44,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:52:44,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:52:44,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:52:44,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:52:44,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:52:44,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:52:44,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:52:44,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:52:44,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 16:52:44,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:52:44,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:52:44,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:52:44,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:52:44,815 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:52:44,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:52:44,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:52:44,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:52:44,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:52:44,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:52:44,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:52:44,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:52:44,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:52:44,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:52:44,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:52:44,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:52:44,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:52:44,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:52:44,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:52:44,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:52:44,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:52:44,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:52:44,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:52:44,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:52:44,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:52:44,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:52:44,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:52:44,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 16:52:44,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 16:52:44,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:52:45,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:52:45,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:52:45,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:52:45,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:52:45,115 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:52:45,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2020-10-11 16:52:45,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21aacf5e9/b53954c5ffd9496fb9820a1a0edf0492/FLAGf66e06f3c [2020-10-11 16:52:45,738 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:52:45,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2020-10-11 16:52:45,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21aacf5e9/b53954c5ffd9496fb9820a1a0edf0492/FLAGf66e06f3c [2020-10-11 16:52:46,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21aacf5e9/b53954c5ffd9496fb9820a1a0edf0492 [2020-10-11 16:52:46,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:52:46,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:52:46,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:52:46,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:52:46,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:52:46,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:46,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe2e70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46, skipping insertion in model container [2020-10-11 16:52:46,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:46,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:52:46,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:52:46,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:52:46,776 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:52:46,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:52:46,974 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:52:46,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46 WrapperNode [2020-10-11 16:52:46,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:52:46,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:52:46,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:52:46,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:52:46,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:52:47,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:52:47,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:52:47,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:52:47,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... [2020-10-11 16:52:47,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:52:47,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:52:47,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:52:47,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:52:47,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:52:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-11 16:52:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-11 16:52:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-11 16:52:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-11 16:52:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:52:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:52:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:52:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:52:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 16:52:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 16:52:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:52:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:52:47,178 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:52:47,674 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:52:47,675 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-11 16:52:47,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:52:47 BoogieIcfgContainer [2020-10-11 16:52:47,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:52:47,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:52:47,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:52:47,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:52:47,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:52:46" (1/3) ... [2020-10-11 16:52:47,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545c427c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:52:47, skipping insertion in model container [2020-10-11 16:52:47,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:46" (2/3) ... [2020-10-11 16:52:47,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545c427c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:52:47, skipping insertion in model container [2020-10-11 16:52:47,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:52:47" (3/3) ... [2020-10-11 16:52:47,687 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2020-10-11 16:52:47,700 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:52:47,708 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 16:52:47,709 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:52:47,745 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,745 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,745 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,751 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,752 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,752 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,752 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,752 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,753 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,753 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,754 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,754 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,754 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,754 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,757 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,757 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,758 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,759 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,759 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,761 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,761 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,761 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,761 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,763 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,763 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,763 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,763 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,764 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,764 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,764 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,764 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,764 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,765 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,765 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,765 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,766 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,768 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,768 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,768 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,773 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,773 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,773 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,773 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,774 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,775 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,775 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,775 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,775 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,776 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,776 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,776 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,781 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,781 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,781 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,782 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,782 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,782 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,782 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,782 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,783 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,783 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,783 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,783 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,784 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,784 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,784 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,784 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,784 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,785 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,785 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,795 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,795 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,795 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,796 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,796 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,796 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,796 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,796 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,797 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,797 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,797 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,797 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,798 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,798 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,798 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,798 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,798 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,799 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:47,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 16:52:47,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:52:47,846 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 16:52:47,846 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:52:47,846 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:52:47,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:52:47,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:52:47,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:52:47,847 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:52:47,863 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-10-11 16:52:47,938 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-10-11 16:52:47,939 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:52:47,949 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-11 16:52:47,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 138 transitions, 298 flow [2020-10-11 16:52:47,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 126 transitions, 264 flow [2020-10-11 16:52:48,009 INFO L129 PetriNetUnfolder]: 6/101 cut-off events. [2020-10-11 16:52:48,010 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 16:52:48,010 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:48,011 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:48,012 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:48,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1945168569, now seen corresponding path program 1 times [2020-10-11 16:52:48,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:48,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606599512] [2020-10-11 16:52:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:48,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606599512] [2020-10-11 16:52:48,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:48,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:48,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57586380] [2020-10-11 16:52:48,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:48,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:48,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:48,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:48,505 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2020-10-11 16:52:48,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 264 flow. Second operand 3 states. [2020-10-11 16:52:48,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:48,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2020-10-11 16:52:48,511 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:48,613 INFO L129 PetriNetUnfolder]: 19/310 cut-off events. [2020-10-11 16:52:48,614 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2020-10-11 16:52:48,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 310 events. 19/310 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 738 event pairs, 3 based on Foata normal form. 36/321 useless extension candidates. Maximal degree in co-relation 310. Up to 23 conditions per place. [2020-10-11 16:52:48,620 INFO L132 encePairwiseOnDemand]: 128/138 looper letters, 5 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2020-10-11 16:52:48,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 272 flow [2020-10-11 16:52:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2020-10-11 16:52:48,637 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.961352657004831 [2020-10-11 16:52:48,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2020-10-11 16:52:48,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2020-10-11 16:52:48,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:48,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2020-10-11 16:52:48,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:48,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:48,659 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:48,662 INFO L185 Difference]: Start difference. First operand has 122 places, 126 transitions, 264 flow. Second operand 3 states and 398 transitions. [2020-10-11 16:52:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 272 flow [2020-10-11 16:52:48,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 122 transitions, 264 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 16:52:48,677 INFO L241 Difference]: Finished difference. Result has 121 places, 122 transitions, 263 flow [2020-10-11 16:52:48,680 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2020-10-11 16:52:48,681 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2020-10-11 16:52:48,681 INFO L481 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 263 flow [2020-10-11 16:52:48,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:48,681 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:48,682 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:48,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:52:48,682 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2070190818, now seen corresponding path program 1 times [2020-10-11 16:52:48,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:48,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126303758] [2020-10-11 16:52:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:48,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126303758] [2020-10-11 16:52:48,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:48,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:52:48,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105667670] [2020-10-11 16:52:48,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 16:52:48,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 16:52:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 16:52:48,889 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 138 [2020-10-11 16:52:48,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 263 flow. Second operand 4 states. [2020-10-11 16:52:48,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:48,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 138 [2020-10-11 16:52:48,890 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:48,995 INFO L129 PetriNetUnfolder]: 15/358 cut-off events. [2020-10-11 16:52:48,995 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 16:52:49,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 358 events. 15/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 870 event pairs, 1 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 340. Up to 17 conditions per place. [2020-10-11 16:52:49,003 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 7 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2020-10-11 16:52:49,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 125 transitions, 291 flow [2020-10-11 16:52:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 16:52:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-11 16:52:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2020-10-11 16:52:49,010 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2020-10-11 16:52:49,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2020-10-11 16:52:49,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2020-10-11 16:52:49,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:49,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2020-10-11 16:52:49,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-11 16:52:49,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-11 16:52:49,020 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-11 16:52:49,020 INFO L185 Difference]: Start difference. First operand has 121 places, 122 transitions, 263 flow. Second operand 4 states and 512 transitions. [2020-10-11 16:52:49,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 125 transitions, 291 flow [2020-10-11 16:52:49,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:49,031 INFO L241 Difference]: Finished difference. Result has 125 places, 125 transitions, 288 flow [2020-10-11 16:52:49,032 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2020-10-11 16:52:49,032 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2020-10-11 16:52:49,032 INFO L481 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 288 flow [2020-10-11 16:52:49,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 16:52:49,033 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:49,033 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:49,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:52:49,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash -704311903, now seen corresponding path program 1 times [2020-10-11 16:52:49,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:49,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081937688] [2020-10-11 16:52:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:49,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081937688] [2020-10-11 16:52:49,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:49,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:49,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848439562] [2020-10-11 16:52:49,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:49,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:49,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:49,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:49,178 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 138 [2020-10-11 16:52:49,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 288 flow. Second operand 3 states. [2020-10-11 16:52:49,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:49,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 138 [2020-10-11 16:52:49,179 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:49,239 INFO L129 PetriNetUnfolder]: 13/367 cut-off events. [2020-10-11 16:52:49,240 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:52:49,241 INFO L80 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 367 events. 13/367 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1117 event pairs, 2 based on Foata normal form. 9/357 useless extension candidates. Maximal degree in co-relation 374. Up to 13 conditions per place. [2020-10-11 16:52:49,243 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 2 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2020-10-11 16:52:49,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 300 flow [2020-10-11 16:52:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2020-10-11 16:52:49,245 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9396135265700483 [2020-10-11 16:52:49,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2020-10-11 16:52:49,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2020-10-11 16:52:49,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:49,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2020-10-11 16:52:49,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:49,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:49,248 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:49,248 INFO L185 Difference]: Start difference. First operand has 125 places, 125 transitions, 288 flow. Second operand 3 states and 389 transitions. [2020-10-11 16:52:49,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 300 flow [2020-10-11 16:52:49,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:49,253 INFO L241 Difference]: Finished difference. Result has 126 places, 125 transitions, 294 flow [2020-10-11 16:52:49,254 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2020-10-11 16:52:49,254 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 4 predicate places. [2020-10-11 16:52:49,254 INFO L481 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 294 flow [2020-10-11 16:52:49,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:49,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:49,255 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:49,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:52:49,255 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:49,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1590038005, now seen corresponding path program 1 times [2020-10-11 16:52:49,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:49,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219861146] [2020-10-11 16:52:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:49,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219861146] [2020-10-11 16:52:49,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:49,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:49,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9329621] [2020-10-11 16:52:49,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:49,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:49,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:49,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:49,446 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2020-10-11 16:52:49,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 294 flow. Second operand 3 states. [2020-10-11 16:52:49,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:49,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2020-10-11 16:52:49,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:49,507 INFO L129 PetriNetUnfolder]: 12/359 cut-off events. [2020-10-11 16:52:49,507 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-11 16:52:49,509 INFO L80 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 359 events. 12/359 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 929 event pairs, 1 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 383. Up to 14 conditions per place. [2020-10-11 16:52:49,510 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 6 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2020-10-11 16:52:49,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 125 transitions, 318 flow [2020-10-11 16:52:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2020-10-11 16:52:49,513 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9396135265700483 [2020-10-11 16:52:49,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2020-10-11 16:52:49,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2020-10-11 16:52:49,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:49,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2020-10-11 16:52:49,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:49,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:49,516 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:49,516 INFO L185 Difference]: Start difference. First operand has 126 places, 125 transitions, 294 flow. Second operand 3 states and 389 transitions. [2020-10-11 16:52:49,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 125 transitions, 318 flow [2020-10-11 16:52:49,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:49,521 INFO L241 Difference]: Finished difference. Result has 127 places, 125 transitions, 318 flow [2020-10-11 16:52:49,521 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2020-10-11 16:52:49,521 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2020-10-11 16:52:49,522 INFO L481 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 318 flow [2020-10-11 16:52:49,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:49,522 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:49,522 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:49,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:52:49,523 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1239398404, now seen corresponding path program 1 times [2020-10-11 16:52:49,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:49,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692924590] [2020-10-11 16:52:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:49,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692924590] [2020-10-11 16:52:49,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102467806] [2020-10-11 16:52:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:52:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:49,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 16:52:49,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:52:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:49,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:52:49,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-11 16:52:49,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749400651] [2020-10-11 16:52:49,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:52:49,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:49,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:52:49,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:52:50,082 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2020-10-11 16:52:50,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 318 flow. Second operand 7 states. [2020-10-11 16:52:50,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:50,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2020-10-11 16:52:50,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:50,299 INFO L129 PetriNetUnfolder]: 18/519 cut-off events. [2020-10-11 16:52:50,299 INFO L130 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2020-10-11 16:52:50,302 INFO L80 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 519 events. 18/519 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1490 event pairs, 0 based on Foata normal form. 5/500 useless extension candidates. Maximal degree in co-relation 610. Up to 29 conditions per place. [2020-10-11 16:52:50,304 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 20 selfloop transitions, 11 changer transitions 0/141 dead transitions. [2020-10-11 16:52:50,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 141 transitions, 436 flow [2020-10-11 16:52:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 16:52:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 16:52:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1120 transitions. [2020-10-11 16:52:50,308 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9017713365539453 [2020-10-11 16:52:50,308 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1120 transitions. [2020-10-11 16:52:50,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1120 transitions. [2020-10-11 16:52:50,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:50,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1120 transitions. [2020-10-11 16:52:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 16:52:50,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 16:52:50,314 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 16:52:50,314 INFO L185 Difference]: Start difference. First operand has 127 places, 125 transitions, 318 flow. Second operand 9 states and 1120 transitions. [2020-10-11 16:52:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 141 transitions, 436 flow [2020-10-11 16:52:50,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 141 transitions, 418 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-11 16:52:50,320 INFO L241 Difference]: Finished difference. Result has 137 places, 134 transitions, 392 flow [2020-10-11 16:52:50,321 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2020-10-11 16:52:50,321 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2020-10-11 16:52:50,321 INFO L481 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 392 flow [2020-10-11 16:52:50,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:52:50,322 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:50,322 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:50,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:52:50,536 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash 709744620, now seen corresponding path program 1 times [2020-10-11 16:52:50,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:50,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615154550] [2020-10-11 16:52:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:51,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615154550] [2020-10-11 16:52:51,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:51,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-11 16:52:51,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782861564] [2020-10-11 16:52:51,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:52:51,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:51,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:52:51,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:53:07,872 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 138 [2020-10-11 16:53:07,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 392 flow. Second operand 20 states. [2020-10-11 16:53:07,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:07,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 138 [2020-10-11 16:53:07,875 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:09,093 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-11 16:53:09,597 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-11 16:53:09,993 INFO L129 PetriNetUnfolder]: 133/1392 cut-off events. [2020-10-11 16:53:09,994 INFO L130 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2020-10-11 16:53:10,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1392 events. 133/1392 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7517 event pairs, 4 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 1185. Up to 205 conditions per place. [2020-10-11 16:53:10,011 INFO L132 encePairwiseOnDemand]: 117/138 looper letters, 81 selfloop transitions, 23 changer transitions 2/208 dead transitions. [2020-10-11 16:53:10,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 208 transitions, 760 flow [2020-10-11 16:53:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 16:53:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-11 16:53:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2027 transitions. [2020-10-11 16:53:10,023 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7344202898550725 [2020-10-11 16:53:10,024 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2027 transitions. [2020-10-11 16:53:10,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2027 transitions. [2020-10-11 16:53:10,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:10,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2027 transitions. [2020-10-11 16:53:10,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 21 states. [2020-10-11 16:53:10,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 21 states. [2020-10-11 16:53:10,040 INFO L81 ComplementDD]: Finished complementDD. Result 21 states. [2020-10-11 16:53:10,041 INFO L185 Difference]: Start difference. First operand has 137 places, 134 transitions, 392 flow. Second operand 20 states and 2027 transitions. [2020-10-11 16:53:10,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 208 transitions, 760 flow [2020-10-11 16:53:10,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 208 transitions, 754 flow, removed 2 selfloop flow, removed 1 redundant places. [2020-10-11 16:53:10,056 INFO L241 Difference]: Finished difference. Result has 169 places, 154 transitions, 545 flow [2020-10-11 16:53:10,056 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=545, PETRI_PLACES=169, PETRI_TRANSITIONS=154} [2020-10-11 16:53:10,057 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 47 predicate places. [2020-10-11 16:53:10,057 INFO L481 AbstractCegarLoop]: Abstraction has has 169 places, 154 transitions, 545 flow [2020-10-11 16:53:10,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:53:10,057 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:10,057 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:10,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:53:10,058 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:53:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:10,058 INFO L82 PathProgramCache]: Analyzing trace with hash 479974357, now seen corresponding path program 1 times [2020-10-11 16:53:10,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:10,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889963711] [2020-10-11 16:53:10,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:10,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889963711] [2020-10-11 16:53:10,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136899115] [2020-10-11 16:53:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:10,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:53:10,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 16:53:10,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:53:10,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2020-10-11 16:53:10,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037259595] [2020-10-11 16:53:10,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:53:10,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:10,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:53:10,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:53:10,640 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 138 [2020-10-11 16:53:10,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 154 transitions, 545 flow. Second operand 6 states. [2020-10-11 16:53:10,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:10,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 138 [2020-10-11 16:53:10,644 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:10,930 INFO L129 PetriNetUnfolder]: 50/1168 cut-off events. [2020-10-11 16:53:10,930 INFO L130 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2020-10-11 16:53:10,937 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 1168 events. 50/1168 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5652 event pairs, 1 based on Foata normal form. 6/1147 useless extension candidates. Maximal degree in co-relation 1259. Up to 63 conditions per place. [2020-10-11 16:53:10,943 INFO L132 encePairwiseOnDemand]: 128/138 looper letters, 26 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2020-10-11 16:53:10,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 707 flow [2020-10-11 16:53:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 16:53:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 16:53:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 979 transitions. [2020-10-11 16:53:10,948 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8867753623188406 [2020-10-11 16:53:10,948 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 979 transitions. [2020-10-11 16:53:10,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 979 transitions. [2020-10-11 16:53:10,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:10,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 979 transitions. [2020-10-11 16:53:10,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 16:53:10,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 16:53:10,954 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 16:53:10,954 INFO L185 Difference]: Start difference. First operand has 169 places, 154 transitions, 545 flow. Second operand 8 states and 979 transitions. [2020-10-11 16:53:10,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 707 flow [2020-10-11 16:53:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 698 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-11 16:53:10,963 INFO L241 Difference]: Finished difference. Result has 178 places, 161 transitions, 662 flow [2020-10-11 16:53:10,963 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=178, PETRI_TRANSITIONS=161} [2020-10-11 16:53:10,964 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 56 predicate places. [2020-10-11 16:53:10,964 INFO L481 AbstractCegarLoop]: Abstraction has has 178 places, 161 transitions, 662 flow [2020-10-11 16:53:10,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:53:10,965 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:10,965 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:11,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:11,180 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:53:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash 886288476, now seen corresponding path program 2 times [2020-10-11 16:53:11,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:11,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630088355] [2020-10-11 16:53:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:11,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630088355] [2020-10-11 16:53:11,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116938443] [2020-10-11 16:53:11,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:11,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:53:11,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:53:11,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:53:11,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:11,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:53:11,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-11 16:53:11,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148477315] [2020-10-11 16:53:11,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:53:11,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:11,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:53:11,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:53:11,747 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2020-10-11 16:53:11,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 161 transitions, 662 flow. Second operand 9 states. [2020-10-11 16:53:11,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:11,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2020-10-11 16:53:11,748 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:12,101 INFO L129 PetriNetUnfolder]: 40/1164 cut-off events. [2020-10-11 16:53:12,102 INFO L130 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2020-10-11 16:53:12,111 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 1164 events. 40/1164 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5541 event pairs, 0 based on Foata normal form. 3/1142 useless extension candidates. Maximal degree in co-relation 1891. Up to 61 conditions per place. [2020-10-11 16:53:12,116 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 28 selfloop transitions, 18 changer transitions 0/176 dead transitions. [2020-10-11 16:53:12,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 176 transitions, 845 flow [2020-10-11 16:53:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 16:53:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 16:53:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1489 transitions. [2020-10-11 16:53:12,123 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8991545893719807 [2020-10-11 16:53:12,124 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1489 transitions. [2020-10-11 16:53:12,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1489 transitions. [2020-10-11 16:53:12,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:12,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1489 transitions. [2020-10-11 16:53:12,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 16:53:12,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 16:53:12,134 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 16:53:12,135 INFO L185 Difference]: Start difference. First operand has 178 places, 161 transitions, 662 flow. Second operand 12 states and 1489 transitions. [2020-10-11 16:53:12,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 176 transitions, 845 flow [2020-10-11 16:53:12,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 176 transitions, 823 flow, removed 11 selfloop flow, removed 0 redundant places. [2020-10-11 16:53:12,146 INFO L241 Difference]: Finished difference. Result has 192 places, 166 transitions, 748 flow [2020-10-11 16:53:12,146 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=748, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2020-10-11 16:53:12,147 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 70 predicate places. [2020-10-11 16:53:12,147 INFO L481 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 748 flow [2020-10-11 16:53:12,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:53:12,147 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:12,148 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:12,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:12,361 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:53:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1159314548, now seen corresponding path program 1 times [2020-10-11 16:53:12,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:12,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223746632] [2020-10-11 16:53:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:53:13,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223746632] [2020-10-11 16:53:13,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316165335] [2020-10-11 16:53:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 56 conjunts are in the unsatisfiable core [2020-10-11 16:53:13,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:13,737 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-11 16:53:13,738 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:53:13,812 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 16:53:14,490 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2020-10-11 16:53:14,491 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:53:14,547 INFO L625 ElimStorePlain]: treesize reduction 13, result has 82.2 percent of original size [2020-10-11 16:53:14,553 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:53:14,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:59 [2020-10-11 16:53:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 16:53:14,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 37 [2020-10-11 16:53:14,902 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:53:14,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:53:14,924 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 16:53:14,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:70 [2020-10-11 16:53:15,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 16:53:15,930 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:53:15,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 24 [2020-10-11 16:53:15,935 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:53:15,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:53:15,959 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:53:15,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:77, output treesize:18 [2020-10-11 16:53:16,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 16:53:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:16,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:53:16,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [25] total 50 [2020-10-11 16:53:16,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991973676] [2020-10-11 16:53:16,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-11 16:53:16,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-11 16:53:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2282, Unknown=0, NotChecked=0, Total=2450 [2020-10-11 16:53:56,334 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 138 [2020-10-11 16:53:56,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 748 flow. Second operand 28 states. [2020-10-11 16:53:56,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:56,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 138 [2020-10-11 16:53:56,335 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:57,561 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-11 16:53:57,888 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-11 16:53:58,160 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-11 16:53:58,578 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-11 16:53:58,891 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-11 16:53:59,386 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-11 16:53:59,770 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-11 16:54:00,398 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 16:54:00,922 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 16:54:01,322 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-11 16:54:01,867 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-11 16:54:02,266 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 16:54:02,674 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-11 16:54:02,985 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-11 16:54:03,374 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-11 16:54:03,855 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-11 16:54:04,470 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-11 16:54:04,966 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-11 16:54:05,492 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-11 16:54:06,288 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-10-11 16:54:06,703 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-11 16:54:07,069 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-11 16:54:07,413 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-11 16:54:08,252 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2020-10-11 16:54:08,658 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-11 16:54:09,282 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:54:09,853 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:54:10,376 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-11 16:54:11,000 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:54:11,425 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-11 16:54:11,881 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-11 16:54:12,676 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-11 16:54:13,232 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-11 16:54:13,954 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 16:54:14,805 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-11 16:54:15,442 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-11 16:54:16,110 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-11 16:54:17,135 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2020-10-11 16:54:17,869 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-11 16:54:18,912 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-11 16:54:19,785 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-11 16:54:20,583 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-11 16:54:21,535 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-11 16:54:22,488 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-11 16:54:23,245 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-11 16:54:23,875 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-11 16:54:24,574 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-11 16:54:25,297 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 16:54:26,008 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:54:26,934 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:54:27,788 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-11 16:54:28,902 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2020-10-11 16:54:29,872 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-11 16:54:31,123 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2020-10-11 16:54:32,205 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-10-11 16:54:33,032 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-10-11 16:54:33,899 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-11 16:54:35,020 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-11 16:54:35,957 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-11 16:54:36,883 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-10-11 16:54:37,993 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-11 16:54:38,830 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-11 16:54:39,571 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-11 16:54:40,609 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-10-11 16:54:41,583 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-11 16:54:42,820 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-11 16:54:43,984 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2020-10-11 16:54:45,436 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2020-10-11 16:54:45,569 INFO L129 PetriNetUnfolder]: 294/2474 cut-off events. [2020-10-11 16:54:45,569 INFO L130 PetriNetUnfolder]: For 1375/1375 co-relation queries the response was YES. [2020-10-11 16:54:45,585 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 2474 events. 294/2474 cut-off events. For 1375/1375 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15432 event pairs, 37 based on Foata normal form. 10/2430 useless extension candidates. Maximal degree in co-relation 4007. Up to 312 conditions per place. [2020-10-11 16:54:45,595 INFO L132 encePairwiseOnDemand]: 100/138 looper letters, 220 selfloop transitions, 123 changer transitions 0/413 dead transitions. [2020-10-11 16:54:45,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 413 transitions, 2394 flow [2020-10-11 16:54:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-11 16:54:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-11 16:54:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 6542 transitions. [2020-10-11 16:54:45,614 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6000733810310035 [2020-10-11 16:54:45,614 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 6542 transitions. [2020-10-11 16:54:45,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 6542 transitions. [2020-10-11 16:54:45,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:54:45,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 6542 transitions. [2020-10-11 16:54:45,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 80 states. [2020-10-11 16:54:45,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 80 states. [2020-10-11 16:54:45,644 INFO L81 ComplementDD]: Finished complementDD. Result 80 states. [2020-10-11 16:54:45,644 INFO L185 Difference]: Start difference. First operand has 192 places, 166 transitions, 748 flow. Second operand 79 states and 6542 transitions. [2020-10-11 16:54:45,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 413 transitions, 2394 flow [2020-10-11 16:54:45,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 413 transitions, 2327 flow, removed 22 selfloop flow, removed 7 redundant places. [2020-10-11 16:54:45,662 INFO L241 Difference]: Finished difference. Result has 295 places, 290 transitions, 1764 flow [2020-10-11 16:54:45,662 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=1764, PETRI_PLACES=295, PETRI_TRANSITIONS=290} [2020-10-11 16:54:45,663 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 173 predicate places. [2020-10-11 16:54:45,663 INFO L481 AbstractCegarLoop]: Abstraction has has 295 places, 290 transitions, 1764 flow [2020-10-11 16:54:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-11 16:54:45,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:54:45,663 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:54:45,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:54:45,870 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:54:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:54:45,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2021173178, now seen corresponding path program 2 times [2020-10-11 16:54:45,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:54:45,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777340383] [2020-10-11 16:54:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:54:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:54:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:54:47,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777340383] [2020-10-11 16:54:47,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698329454] [2020-10-11 16:54:47,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:54:47,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-11 16:54:47,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:54:47,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-11 16:54:47,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:54:48,160 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-11 16:54:48,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:54:48,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 16:54:48,748 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2020-10-11 16:54:49,405 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2020-10-11 16:54:49,406 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:54:49,469 INFO L625 ElimStorePlain]: treesize reduction 13, result has 79.7 percent of original size [2020-10-11 16:54:49,471 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:54:49,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:68, output treesize:50 [2020-10-11 16:54:51,099 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 21 [2020-10-11 16:54:51,099 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:54:51,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:54:51,127 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:54:51,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:18 [2020-10-11 16:54:51,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 16:54:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:54:51,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:54:51,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [26] total 45 [2020-10-11 16:54:51,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119329754] [2020-10-11 16:54:51,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-11 16:54:51,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:54:51,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-11 16:54:51,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 16:56:13,717 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 138 [2020-10-11 16:56:13,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 290 transitions, 1764 flow. Second operand 22 states. [2020-10-11 16:56:13,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:56:13,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 138 [2020-10-11 16:56:13,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:56:14,213 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-11 16:56:14,624 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 16:56:15,117 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-11 16:56:15,650 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-11 16:56:16,259 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-11 16:56:17,148 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-11 16:56:18,147 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-11 16:56:19,356 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-11 16:56:20,602 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 16:56:21,740 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-11 16:56:23,261 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-11 16:56:24,470 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 16:56:25,346 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-11 16:56:25,882 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-11 16:56:26,526 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-11 16:56:27,706 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:56:28,528 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-11 16:56:30,112 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:56:30,712 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-11 16:56:31,373 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-11 16:56:33,110 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-11 16:56:34,224 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-11 16:56:35,139 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-11 16:56:36,101 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-11 16:56:37,160 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:56:38,062 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-11 16:56:39,456 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-11 16:56:40,959 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:56:42,852 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:56:44,646 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-10-11 16:56:46,015 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 16:56:47,755 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-11 16:56:48,639 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-11 16:56:49,599 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-11 16:56:50,716 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-11 16:56:51,985 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-11 16:56:53,136 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:56:54,613 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-11 16:56:56,008 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:56:58,023 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:56:59,905 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-11 16:57:02,241 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-10-11 16:57:04,044 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-11 16:57:05,455 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-11 16:57:06,338 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-11 16:57:08,227 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:57:09,251 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-11 16:57:10,774 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:57:11,588 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-11 16:57:12,838 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-11 16:57:14,118 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-11 16:57:15,263 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-11 16:57:17,014 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:57:18,540 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:57:20,624 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-11 16:57:22,590 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-11 16:57:24,833 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-11 16:57:25,484 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 16:57:26,014 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-11 16:57:26,668 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-11 16:57:27,142 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-10-11 16:57:27,611 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-11 16:57:28,387 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-11 16:57:29,168 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-11 16:57:30,261 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-11 16:57:31,244 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-11 16:57:32,583 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:57:32,811 INFO L129 PetriNetUnfolder]: 272/2987 cut-off events. [2020-10-11 16:57:32,811 INFO L130 PetriNetUnfolder]: For 3894/3895 co-relation queries the response was YES. [2020-10-11 16:57:32,834 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7877 conditions, 2987 events. 272/2987 cut-off events. For 3894/3895 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 20366 event pairs, 9 based on Foata normal form. 3/2919 useless extension candidates. Maximal degree in co-relation 5624. Up to 237 conditions per place. [2020-10-11 16:57:32,845 INFO L132 encePairwiseOnDemand]: 105/138 looper letters, 69 selfloop transitions, 263 changer transitions 0/431 dead transitions. [2020-10-11 16:57:32,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 431 transitions, 3250 flow [2020-10-11 16:57:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-11 16:57:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-11 16:57:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6291 transitions. [2020-10-11 16:57:32,860 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6606805293005671 [2020-10-11 16:57:32,861 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6291 transitions. [2020-10-11 16:57:32,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6291 transitions. [2020-10-11 16:57:32,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:32,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6291 transitions. [2020-10-11 16:57:32,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 70 states. [2020-10-11 16:57:32,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 70 states. [2020-10-11 16:57:32,879 INFO L81 ComplementDD]: Finished complementDD. Result 70 states. [2020-10-11 16:57:32,879 INFO L185 Difference]: Start difference. First operand has 295 places, 290 transitions, 1764 flow. Second operand 69 states and 6291 transitions. [2020-10-11 16:57:32,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 431 transitions, 3250 flow [2020-10-11 16:57:32,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 431 transitions, 2994 flow, removed 119 selfloop flow, removed 9 redundant places. [2020-10-11 16:57:32,920 INFO L241 Difference]: Finished difference. Result has 370 places, 394 transitions, 2942 flow [2020-10-11 16:57:32,921 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=2942, PETRI_PLACES=370, PETRI_TRANSITIONS=394} [2020-10-11 16:57:32,921 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 248 predicate places. [2020-10-11 16:57:32,921 INFO L481 AbstractCegarLoop]: Abstraction has has 370 places, 394 transitions, 2942 flow [2020-10-11 16:57:32,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-11 16:57:32,921 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:32,922 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:33,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-11 16:57:33,137 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1459782741, now seen corresponding path program 2 times [2020-10-11 16:57:33,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:33,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68291302] [2020-10-11 16:57:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:57:33,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68291302] [2020-10-11 16:57:33,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386669152] [2020-10-11 16:57:33,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:33,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:57:33,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:57:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 16:57:33,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:57:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:57:33,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:57:33,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-11 16:57:33,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837646532] [2020-10-11 16:57:33,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 16:57:33,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:57:33,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 16:57:33,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:57:35,216 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 138 [2020-10-11 16:57:35,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 394 transitions, 2942 flow. Second operand 10 states. [2020-10-11 16:57:35,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:57:35,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 138 [2020-10-11 16:57:35,217 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:57:36,375 INFO L129 PetriNetUnfolder]: 172/3160 cut-off events. [2020-10-11 16:57:36,375 INFO L130 PetriNetUnfolder]: For 5467/5467 co-relation queries the response was YES. [2020-10-11 16:57:36,406 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 3160 events. 172/3160 cut-off events. For 5467/5467 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 22074 event pairs, 11 based on Foata normal form. 6/3091 useless extension candidates. Maximal degree in co-relation 5997. Up to 286 conditions per place. [2020-10-11 16:57:36,419 INFO L132 encePairwiseOnDemand]: 129/138 looper letters, 85 selfloop transitions, 66 changer transitions 0/444 dead transitions. [2020-10-11 16:57:36,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 444 transitions, 3670 flow [2020-10-11 16:57:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:57:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-11 16:57:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1692 transitions. [2020-10-11 16:57:36,427 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8757763975155279 [2020-10-11 16:57:36,427 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1692 transitions. [2020-10-11 16:57:36,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1692 transitions. [2020-10-11 16:57:36,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:36,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1692 transitions. [2020-10-11 16:57:36,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-11 16:57:36,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-11 16:57:36,432 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-11 16:57:36,432 INFO L185 Difference]: Start difference. First operand has 370 places, 394 transitions, 2942 flow. Second operand 14 states and 1692 transitions. [2020-10-11 16:57:36,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 444 transitions, 3670 flow [2020-10-11 16:57:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 444 transitions, 3392 flow, removed 58 selfloop flow, removed 12 redundant places. [2020-10-11 16:57:36,489 INFO L241 Difference]: Finished difference. Result has 377 places, 417 transitions, 3217 flow [2020-10-11 16:57:36,490 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3217, PETRI_PLACES=377, PETRI_TRANSITIONS=417} [2020-10-11 16:57:36,491 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 255 predicate places. [2020-10-11 16:57:36,491 INFO L481 AbstractCegarLoop]: Abstraction has has 377 places, 417 transitions, 3217 flow [2020-10-11 16:57:36,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 16:57:36,491 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:36,491 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:36,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:36,705 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:36,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash -436928324, now seen corresponding path program 3 times [2020-10-11 16:57:36,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:36,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236312144] [2020-10-11 16:57:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:57:36,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236312144] [2020-10-11 16:57:36,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020767274] [2020-10-11 16:57:36,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:37,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:57:37,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:57:37,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 16:57:37,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:57:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:57:37,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:57:37,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-11 16:57:37,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49960241] [2020-10-11 16:57:37,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:57:37,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:57:37,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:57:37,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:57:39,079 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2020-10-11 16:57:39,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 417 transitions, 3217 flow. Second operand 11 states. [2020-10-11 16:57:39,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:57:39,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2020-10-11 16:57:39,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:57:40,258 INFO L129 PetriNetUnfolder]: 159/3210 cut-off events. [2020-10-11 16:57:40,258 INFO L130 PetriNetUnfolder]: For 6656/6657 co-relation queries the response was YES. [2020-10-11 16:57:40,286 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8446 conditions, 3210 events. 159/3210 cut-off events. For 6656/6657 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 22513 event pairs, 4 based on Foata normal form. 8/3143 useless extension candidates. Maximal degree in co-relation 6660. Up to 323 conditions per place. [2020-10-11 16:57:40,297 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 86 selfloop transitions, 56 changer transitions 0/452 dead transitions. [2020-10-11 16:57:40,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 452 transitions, 3815 flow [2020-10-11 16:57:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 16:57:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-11 16:57:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1860 transitions. [2020-10-11 16:57:40,826 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2020-10-11 16:57:40,826 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1860 transitions. [2020-10-11 16:57:40,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1860 transitions. [2020-10-11 16:57:40,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:40,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1860 transitions. [2020-10-11 16:57:40,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-10-11 16:57:40,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 16 states. [2020-10-11 16:57:40,831 INFO L81 ComplementDD]: Finished complementDD. Result 16 states. [2020-10-11 16:57:40,831 INFO L185 Difference]: Start difference. First operand has 377 places, 417 transitions, 3217 flow. Second operand 15 states and 1860 transitions. [2020-10-11 16:57:40,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 452 transitions, 3815 flow [2020-10-11 16:57:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 452 transitions, 3719 flow, removed 26 selfloop flow, removed 7 redundant places. [2020-10-11 16:57:40,869 INFO L241 Difference]: Finished difference. Result has 387 places, 433 transitions, 3502 flow [2020-10-11 16:57:40,869 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3502, PETRI_PLACES=387, PETRI_TRANSITIONS=433} [2020-10-11 16:57:40,869 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 265 predicate places. [2020-10-11 16:57:40,870 INFO L481 AbstractCegarLoop]: Abstraction has has 387 places, 433 transitions, 3502 flow [2020-10-11 16:57:40,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:57:40,870 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:40,870 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:41,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:41,077 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:41,077 INFO L82 PathProgramCache]: Analyzing trace with hash -140630916, now seen corresponding path program 1 times [2020-10-11 16:57:41,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:41,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351063875] [2020-10-11 16:57:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:41,270 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 104: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,271 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 105: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,272 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 106: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,273 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 107: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,276 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 108: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,278 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 109: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,279 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 110: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,280 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 111: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:41,282 ERROR L253 erpolLogProxyWrapper]: Interpolant 112 not inductive [2020-10-11 16:57:41,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 16:57:41,311 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:507) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-11 16:57:41,316 INFO L168 Benchmark]: Toolchain (without parser) took 295262.35 ms. Allocated memory was 251.1 MB in the beginning and 690.5 MB in the end (delta: 439.4 MB). Free memory was 206.7 MB in the beginning and 539.3 MB in the end (delta: -332.6 MB). Peak memory consumption was 106.7 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:41,316 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:57:41,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 920.29 ms. Allocated memory was 251.1 MB in the beginning and 314.0 MB in the end (delta: 62.9 MB). Free memory was 206.7 MB in the beginning and 242.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 37.6 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:41,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.06 ms. Allocated memory is still 314.0 MB. Free memory was 242.1 MB in the beginning and 239.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:41,318 INFO L168 Benchmark]: Boogie Preprocessor took 61.73 ms. Allocated memory is still 314.0 MB. Free memory was 239.5 MB in the beginning and 237.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:41,318 INFO L168 Benchmark]: RCFGBuilder took 575.87 ms. Allocated memory is still 314.0 MB. Free memory was 237.0 MB in the beginning and 202.6 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:41,319 INFO L168 Benchmark]: TraceAbstraction took 293635.36 ms. Allocated memory was 314.0 MB in the beginning and 690.5 MB in the end (delta: 376.4 MB). Free memory was 202.6 MB in the beginning and 539.3 MB in the end (delta: -336.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:41,321 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 920.29 ms. Allocated memory was 251.1 MB in the beginning and 314.0 MB in the end (delta: 62.9 MB). Free memory was 206.7 MB in the beginning and 242.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 37.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 64.06 ms. Allocated memory is still 314.0 MB. Free memory was 242.1 MB in the beginning and 239.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 61.73 ms. Allocated memory is still 314.0 MB. Free memory was 239.5 MB in the beginning and 237.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 575.87 ms. Allocated memory is still 314.0 MB. Free memory was 237.0 MB in the beginning and 202.6 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 293635.36 ms. Allocated memory was 314.0 MB in the beginning and 690.5 MB in the end (delta: 376.4 MB). Free memory was 202.6 MB in the beginning and 539.3 MB in the end (delta: -336.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...