/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:40:49,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:40:49,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:40:49,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:40:49,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:40:49,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:40:49,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:40:49,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:40:49,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:40:49,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:40:49,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:40:49,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:40:49,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:40:49,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:40:49,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:40:49,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:40:49,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:40:49,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:40:49,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:40:49,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:40:49,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:40:49,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:40:49,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:40:49,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:40:49,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:40:49,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:40:49,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:40:49,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:40:49,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:40:49,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:40:49,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:40:49,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:40:49,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:40:49,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:40:49,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:40:49,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:40:49,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:40:49,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:40:49,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:40:49,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:40:49,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:40:49,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:40:49,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:40:49,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:40:49,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:40:49,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:40:49,806 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:40:49,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:40:49,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:40:49,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:40:49,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:40:49,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:40:49,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:40:49,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:40:49,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:40:49,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:40:49,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:40:49,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:40:49,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:40:49,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:40:49,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:40:49,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:40:49,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:40:49,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:40:49,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:40:49,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:40:49,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:40:49,811 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:40:49,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:40:49,812 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:40:49,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:40:49,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:40:50,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:40:50,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:40:50,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:40:50,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:40:50,131 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:40:50,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-04-18 07:40:50,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db9ff650/c83894510a204bfdbdb04f806712d162/FLAG0bd006a49 [2020-04-18 07:40:50,783 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:40:50,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-04-18 07:40:50,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db9ff650/c83894510a204bfdbdb04f806712d162/FLAG0bd006a49 [2020-04-18 07:40:51,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db9ff650/c83894510a204bfdbdb04f806712d162 [2020-04-18 07:40:51,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:40:51,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:40:51,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:40:51,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:40:51,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:40:51,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c7531c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51, skipping insertion in model container [2020-04-18 07:40:51,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:40:51,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:40:51,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:40:51,635 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:40:51,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:40:51,744 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:40:51,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51 WrapperNode [2020-04-18 07:40:51,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:40:51,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:40:51,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:40:51,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:40:51,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:40:51,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:40:51,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:40:51,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:40:51,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:40:51,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:40:51,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:40:51,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:40:51,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (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 [2020-04-18 07:40:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:40:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:40:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:40:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:40:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:40:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:40:51,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:40:51,881 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:40:52,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:40:52,268 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-18 07:40:52,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:52 BoogieIcfgContainer [2020-04-18 07:40:52,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:40:52,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:40:52,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:40:52,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:40:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:40:51" (1/3) ... [2020-04-18 07:40:52,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca928f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:52, skipping insertion in model container [2020-04-18 07:40:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51" (2/3) ... [2020-04-18 07:40:52,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca928f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:52, skipping insertion in model container [2020-04-18 07:40:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:52" (3/3) ... [2020-04-18 07:40:52,281 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-04-18 07:40:52,291 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:40:52,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:40:52,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 07:40:52,300 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:40:52,323 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,323 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,325 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,325 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,325 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,326 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,326 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,328 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,328 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,329 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,329 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,334 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,334 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,335 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,335 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,336 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,336 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,336 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 07:40:52,376 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:52,376 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:52,376 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:52,377 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:52,377 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:52,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:52,377 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:52,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:52,391 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-04-18 07:40:52,393 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-04-18 07:40:52,431 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-04-18 07:40:52,432 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:40:52,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-04-18 07:40:52,443 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-04-18 07:40:52,461 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-04-18 07:40:52,462 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:40:52,463 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-04-18 07:40:52,463 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 260 [2020-04-18 07:40:52,465 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:53,186 INFO L206 etLargeBlockEncoding]: Checked pairs total: 174 [2020-04-18 07:40:53,186 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2020-04-18 07:40:53,190 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-04-18 07:40:53,197 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-04-18 07:40:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 07:40:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-18 07:40:53,205 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:53,205 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-18 07:40:53,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash 174998047, now seen corresponding path program 1 times [2020-04-18 07:40:53,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:53,217 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [352073354] [2020-04-18 07:40:53,232 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:53,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-04-18 07:40:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-04-18 07:40:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-18 07:40:53,245 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash 174998047, now seen corresponding path program 2 times [2020-04-18 07:40:53,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:53,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178861692] [2020-04-18 07:40:53,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:53,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178861692] [2020-04-18 07:40:53,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:53,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:40:53,565 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:53,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:53,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-04-18 07:40:53,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:53,589 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:53,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:40:53,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:40:53,596 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2020-04-18 07:40:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:53,606 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-04-18 07:40:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-04-18 07:40:53,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:53,607 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [352073354] [2020-04-18 07:40:53,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:53,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:40:53,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [352073354] [2020-04-18 07:40:53,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:40:53,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:53,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:40:53,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:40:53,615 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-04-18 07:40:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:53,647 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-04-18 07:40:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:40:53,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-04-18 07:40:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:53,657 INFO L225 Difference]: With dead ends: 23 [2020-04-18 07:40:53,657 INFO L226 Difference]: Without dead ends: 23 [2020-04-18 07:40:53,659 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:40:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-04-18 07:40:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-04-18 07:40:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-04-18 07:40:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-04-18 07:40:53,695 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-04-18 07:40:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:53,695 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-04-18 07:40:53,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:40:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-04-18 07:40:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:40:53,696 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:53,696 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-18 07:40:53,696 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1129907960, now seen corresponding path program 1 times [2020-04-18 07:40:53,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:53,697 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [981811729] [2020-04-18 07:40:53,698 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:53,699 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:40:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 07:40:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:40:53,699 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1129907960, now seen corresponding path program 2 times [2020-04-18 07:40:53,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:53,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137385459] [2020-04-18 07:40:53,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:53,750 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:40:53,750 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:40:53,751 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:40:53,752 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:40:53,752 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 07:40:53,758 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,759 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,759 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,759 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,759 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,759 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,759 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,760 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,760 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,760 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,760 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,760 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,761 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,761 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,761 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,762 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,762 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,762 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,762 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,762 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,763 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,763 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,763 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,763 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,763 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,763 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,764 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,764 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,764 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,765 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,765 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,765 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,765 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,767 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,767 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,767 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,767 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,768 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,768 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,768 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 07:40:53,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:53,771 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:53,771 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:53,771 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:53,771 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:53,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:53,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:53,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:53,774 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-04-18 07:40:53,774 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-04-18 07:40:53,787 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-04-18 07:40:53,788 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 07:40:53,789 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-04-18 07:40:53,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-04-18 07:40:53,802 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-04-18 07:40:53,802 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 07:40:53,803 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-04-18 07:40:53,804 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 884 [2020-04-18 07:40:53,805 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:54,607 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1690 [2020-04-18 07:40:54,608 INFO L214 etLargeBlockEncoding]: Total number of compositions: 31 [2020-04-18 07:40:54,608 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 54 flow [2020-04-18 07:40:54,619 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2020-04-18 07:40:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-04-18 07:40:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:54,620 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:54,620 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:54,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash -918990935, now seen corresponding path program 1 times [2020-04-18 07:40:54,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:54,621 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [639638869] [2020-04-18 07:40:54,622 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:54,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:40:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:54,623 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:54,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:54,624 INFO L82 PathProgramCache]: Analyzing trace with hash -918990935, now seen corresponding path program 2 times [2020-04-18 07:40:54,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:54,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058492517] [2020-04-18 07:40:54,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:54,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058492517] [2020-04-18 07:40:54,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:54,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:54,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:54,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:54,716 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:54,716 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:54,733 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:54,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:54,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:54,734 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2020-04-18 07:40:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:54,745 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:40:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:40:54,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:54,746 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [639638869] [2020-04-18 07:40:54,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:54,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:40:54,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [639638869] [2020-04-18 07:40:54,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:40:54,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:54,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:54,748 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2020-04-18 07:40:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:54,799 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2020-04-18 07:40:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:40:54,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-04-18 07:40:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:54,806 INFO L225 Difference]: With dead ends: 251 [2020-04-18 07:40:54,807 INFO L226 Difference]: Without dead ends: 251 [2020-04-18 07:40:54,807 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-04-18 07:40:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-04-18 07:40:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-04-18 07:40:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2020-04-18 07:40:54,841 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2020-04-18 07:40:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:54,842 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2020-04-18 07:40:54,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:40:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2020-04-18 07:40:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:54,843 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:54,843 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-18 07:40:54,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -684520473, now seen corresponding path program 1 times [2020-04-18 07:40:54,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:54,844 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [140325220] [2020-04-18 07:40:54,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:54,845 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:40:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:40:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:54,846 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:54,846 INFO L82 PathProgramCache]: Analyzing trace with hash -684520473, now seen corresponding path program 2 times [2020-04-18 07:40:54,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:54,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288987759] [2020-04-18 07:40:54,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:54,881 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:40:54,882 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:40:54,884 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:40:54,885 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:40:54,887 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 07:40:54,893 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,893 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,893 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,894 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,894 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,895 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,895 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,895 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,895 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,895 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,896 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,896 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,896 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,896 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,896 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,897 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,897 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,897 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,898 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,898 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,898 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,898 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,899 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,899 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,899 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,899 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,899 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,900 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,900 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,900 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,900 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,900 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,900 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,901 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,901 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,901 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,901 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,905 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,906 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,906 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,906 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,906 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,906 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,907 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,912 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,913 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,913 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,913 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,913 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,913 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,913 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:54,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 07:40:54,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:54,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:54,915 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:54,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:54,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:54,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:54,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:54,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:54,917 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-04-18 07:40:54,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-04-18 07:40:54,931 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-04-18 07:40:54,931 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 07:40:54,932 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-04-18 07:40:54,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-04-18 07:40:54,948 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-04-18 07:40:54,948 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 07:40:54,949 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-04-18 07:40:54,951 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1872 [2020-04-18 07:40:54,951 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:55,874 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3466 [2020-04-18 07:40:55,875 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-04-18 07:40:55,875 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 75 flow [2020-04-18 07:40:55,937 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2020-04-18 07:40:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2020-04-18 07:40:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:55,939 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:55,939 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:55,939 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:55,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1577579009, now seen corresponding path program 1 times [2020-04-18 07:40:55,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:55,940 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1542275380] [2020-04-18 07:40:55,941 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:55,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:40:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:55,942 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1577579009, now seen corresponding path program 2 times [2020-04-18 07:40:55,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:55,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161769144] [2020-04-18 07:40:55,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:56,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161769144] [2020-04-18 07:40:56,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:56,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:56,033 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:56,034 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,035 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:56,035 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:56,059 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:56,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:56,060 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2020-04-18 07:40:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,068 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:40:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:40:56,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:56,068 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1542275380] [2020-04-18 07:40:56,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:56,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:40:56,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1542275380] [2020-04-18 07:40:56,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:40:56,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:56,070 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2020-04-18 07:40:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,194 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2020-04-18 07:40:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:40:56,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-04-18 07:40:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:56,213 INFO L225 Difference]: With dead ends: 1547 [2020-04-18 07:40:56,214 INFO L226 Difference]: Without dead ends: 1547 [2020-04-18 07:40:56,214 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-04-18 07:40:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2020-04-18 07:40:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-04-18 07:40:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2020-04-18 07:40:56,288 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2020-04-18 07:40:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:56,288 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2020-04-18 07:40:56,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:40:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2020-04-18 07:40:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:56,289 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:56,290 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:56,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,290 INFO L82 PathProgramCache]: Analyzing trace with hash 70043134, now seen corresponding path program 1 times [2020-04-18 07:40:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:56,291 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [16119649] [2020-04-18 07:40:56,291 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,292 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:40:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:40:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:56,293 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash 70043134, now seen corresponding path program 2 times [2020-04-18 07:40:56,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:56,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889548290] [2020-04-18 07:40:56,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:56,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889548290] [2020-04-18 07:40:56,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:56,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:56,416 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:56,418 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,419 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:40:56,419 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:56,441 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:56,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:40:56,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:40:56,442 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 07:40:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,465 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 07:40:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 07:40:56,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:56,465 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [16119649] [2020-04-18 07:40:56,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:56,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:40:56,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [16119649] [2020-04-18 07:40:56,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:40:56,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:56,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:40:56,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:40:56,467 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2020-04-18 07:40:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,594 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2020-04-18 07:40:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:40:56,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 07:40:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:56,608 INFO L225 Difference]: With dead ends: 1516 [2020-04-18 07:40:56,608 INFO L226 Difference]: Without dead ends: 1516 [2020-04-18 07:40:56,609 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:40:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-04-18 07:40:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2020-04-18 07:40:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-04-18 07:40:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2020-04-18 07:40:56,679 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2020-04-18 07:40:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:56,680 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2020-04-18 07:40:56,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:40:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2020-04-18 07:40:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:40:56,685 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:56,685 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:56,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,686 INFO L82 PathProgramCache]: Analyzing trace with hash 745225709, now seen corresponding path program 1 times [2020-04-18 07:40:56,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:56,690 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [528748109] [2020-04-18 07:40:56,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,691 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:40:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:40:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:40:56,693 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash 745225709, now seen corresponding path program 2 times [2020-04-18 07:40:56,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:56,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591794110] [2020-04-18 07:40:56,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:40:56,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591794110] [2020-04-18 07:40:56,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:56,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:56,814 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:56,814 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,815 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:40:56,815 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:56,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:56,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:56,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:56,833 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2020-04-18 07:40:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,843 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:40:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:40:56,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:56,844 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [528748109] [2020-04-18 07:40:56,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:56,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:40:56,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [528748109] [2020-04-18 07:40:56,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:40:56,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:56,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:56,847 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2020-04-18 07:40:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,924 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2020-04-18 07:40:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:40:56,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:40:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:56,939 INFO L225 Difference]: With dead ends: 1685 [2020-04-18 07:40:56,939 INFO L226 Difference]: Without dead ends: 1685 [2020-04-18 07:40:56,939 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-04-18 07:40:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2020-04-18 07:40:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-04-18 07:40:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2020-04-18 07:40:57,004 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2020-04-18 07:40:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:57,006 INFO L479 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2020-04-18 07:40:57,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:40:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2020-04-18 07:40:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:40:57,008 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:57,008 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-18 07:40:57,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:57,009 INFO L82 PathProgramCache]: Analyzing trace with hash 405776013, now seen corresponding path program 1 times [2020-04-18 07:40:57,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:57,009 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1338295872] [2020-04-18 07:40:57,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:57,011 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:40:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 07:40:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:40:57,011 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash 405776013, now seen corresponding path program 2 times [2020-04-18 07:40:57,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:57,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385332392] [2020-04-18 07:40:57,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:57,064 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:40:57,065 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:40:57,065 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:40:57,068 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:40:57,068 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 07:40:57,077 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,077 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,080 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,080 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,080 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,081 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,081 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,082 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,082 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,084 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,084 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,085 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,085 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,085 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,087 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,087 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,087 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,089 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,089 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,090 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,090 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,090 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,090 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,090 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,092 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,092 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,093 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,094 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,095 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,095 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,095 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,095 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,095 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,095 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:57,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:40:57,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:57,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:57,098 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:57,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:57,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:57,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:57,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:57,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:57,103 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-04-18 07:40:57,104 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-04-18 07:40:57,136 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-04-18 07:40:57,137 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 07:40:57,138 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-04-18 07:40:57,145 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-04-18 07:40:57,168 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-04-18 07:40:57,169 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 07:40:57,171 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-04-18 07:40:57,177 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3224 [2020-04-18 07:40:57,177 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:58,368 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6771 [2020-04-18 07:40:58,368 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 07:40:58,368 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 102 flow [2020-04-18 07:40:58,938 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2020-04-18 07:40:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2020-04-18 07:40:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:58,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:58,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:58,939 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1757560872, now seen corresponding path program 1 times [2020-04-18 07:40:58,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:58,939 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [527430008] [2020-04-18 07:40:58,940 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:58,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:40:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:58,941 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:58,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:58,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1757560872, now seen corresponding path program 2 times [2020-04-18 07:40:58,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:58,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508423023] [2020-04-18 07:40:58,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:59,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508423023] [2020-04-18 07:40:59,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:59,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:59,000 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:59,001 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:59,001 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:59,001 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:59,022 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:59,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:59,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:59,023 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2020-04-18 07:40:59,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:59,032 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:40:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:40:59,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:59,032 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [527430008] [2020-04-18 07:40:59,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:59,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:40:59,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [527430008] [2020-04-18 07:40:59,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:40:59,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:59,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:40:59,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:59,034 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2020-04-18 07:40:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:59,287 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2020-04-18 07:40:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:40:59,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-04-18 07:40:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:59,385 INFO L225 Difference]: With dead ends: 8945 [2020-04-18 07:40:59,386 INFO L226 Difference]: Without dead ends: 8945 [2020-04-18 07:40:59,386 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:40:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2020-04-18 07:40:59,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2020-04-18 07:40:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-04-18 07:40:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2020-04-18 07:40:59,897 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2020-04-18 07:40:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:59,898 INFO L479 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2020-04-18 07:40:59,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:40:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2020-04-18 07:40:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:59,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:59,898 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:59,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:59,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1093825439, now seen corresponding path program 1 times [2020-04-18 07:40:59,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:59,900 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1158232983] [2020-04-18 07:40:59,900 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:59,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:40:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:40:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:59,901 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:59,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:59,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1093825439, now seen corresponding path program 2 times [2020-04-18 07:40:59,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:59,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064988629] [2020-04-18 07:40:59,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:59,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064988629] [2020-04-18 07:40:59,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:59,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:59,995 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:59,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:59,997 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:40:59,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:00,016 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:00,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:00,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:00,017 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 07:41:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:00,036 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 07:41:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 07:41:00,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:00,036 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1158232983] [2020-04-18 07:41:00,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:00,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:00,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1158232983] [2020-04-18 07:41:00,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:00,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:00,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:00,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:00,038 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2020-04-18 07:41:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:00,801 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2020-04-18 07:41:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:41:00,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 07:41:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:00,851 INFO L225 Difference]: With dead ends: 9334 [2020-04-18 07:41:00,852 INFO L226 Difference]: Without dead ends: 9334 [2020-04-18 07:41:00,852 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2020-04-18 07:41:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2020-04-18 07:41:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2020-04-18 07:41:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2020-04-18 07:41:01,270 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2020-04-18 07:41:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:01,270 INFO L479 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2020-04-18 07:41:01,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2020-04-18 07:41:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:41:01,271 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:01,271 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:01,271 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:01,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1717595244, now seen corresponding path program 1 times [2020-04-18 07:41:01,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:01,272 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [170685221] [2020-04-18 07:41:01,272 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:01,273 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:41:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:41:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:41:01,273 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:01,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1717595244, now seen corresponding path program 2 times [2020-04-18 07:41:01,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:01,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484429563] [2020-04-18 07:41:01,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:41:01,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484429563] [2020-04-18 07:41:01,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:01,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:01,329 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:01,330 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:01,330 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:41:01,331 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:01,352 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:01,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:01,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:01,352 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2020-04-18 07:41:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:01,363 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:41:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:41:01,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:01,364 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [170685221] [2020-04-18 07:41:01,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:01,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:01,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [170685221] [2020-04-18 07:41:01,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:41:01,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:01,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:01,365 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2020-04-18 07:41:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:01,632 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2020-04-18 07:41:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:01,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:41:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:01,681 INFO L225 Difference]: With dead ends: 10343 [2020-04-18 07:41:01,681 INFO L226 Difference]: Without dead ends: 10343 [2020-04-18 07:41:01,682 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2020-04-18 07:41:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2020-04-18 07:41:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2020-04-18 07:41:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2020-04-18 07:41:02,081 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2020-04-18 07:41:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:02,082 INFO L479 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2020-04-18 07:41:02,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:41:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2020-04-18 07:41:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:02,083 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:02,083 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:02,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1341588144, now seen corresponding path program 1 times [2020-04-18 07:41:02,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:02,084 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1649256175] [2020-04-18 07:41:02,084 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,085 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:41:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 07:41:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:02,085 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1341588144, now seen corresponding path program 2 times [2020-04-18 07:41:02,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144806620] [2020-04-18 07:41:02,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:41:02,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144806620] [2020-04-18 07:41:02,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:02,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:02,140 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:02,141 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,141 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:41:02,142 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:02,160 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:02,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:02,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:02,161 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-04-18 07:41:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,177 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-04-18 07:41:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-04-18 07:41:02,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:02,177 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1649256175] [2020-04-18 07:41:02,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:02,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:02,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1649256175] [2020-04-18 07:41:02,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:02,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:02,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:02,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:02,179 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2020-04-18 07:41:02,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,452 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2020-04-18 07:41:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:41:02,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 07:41:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:02,506 INFO L225 Difference]: With dead ends: 11574 [2020-04-18 07:41:02,506 INFO L226 Difference]: Without dead ends: 11574 [2020-04-18 07:41:02,506 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2020-04-18 07:41:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2020-04-18 07:41:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2020-04-18 07:41:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2020-04-18 07:41:02,915 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2020-04-18 07:41:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:02,915 INFO L479 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2020-04-18 07:41:02,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2020-04-18 07:41:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:02,916 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:02,917 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:02,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash 472658435, now seen corresponding path program 1 times [2020-04-18 07:41:02,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:02,918 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1876776545] [2020-04-18 07:41:02,918 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 07:41:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 07:41:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:02,920 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash 472658435, now seen corresponding path program 2 times [2020-04-18 07:41:02,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857258466] [2020-04-18 07:41:02,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:02,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857258466] [2020-04-18 07:41:02,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232119478] [2020-04-18 07:41:02,972 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 07:41:03,081 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:41:03,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:41:03,085 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2020-04-18 07:41:03,090 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:41:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:03,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:41:03,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-04-18 07:41:03,162 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:03,163 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:03,165 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-04-18 07:41:03,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:03,252 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:41:03,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:41:03,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:41:03,253 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 10 states. [2020-04-18 07:41:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:03,534 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2020-04-18 07:41:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 65 transitions. [2020-04-18 07:41:03,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:03,535 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1876776545] [2020-04-18 07:41:03,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:03,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:41:03,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1876776545] [2020-04-18 07:41:03,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 07:41:03,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:03,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:41:03,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:41:03,537 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 10 states. [2020-04-18 07:41:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:03,869 INFO L93 Difference]: Finished difference Result 2411 states and 8750 transitions. [2020-04-18 07:41:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 07:41:03,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 07:41:03,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:03,876 INFO L225 Difference]: With dead ends: 2411 [2020-04-18 07:41:03,876 INFO L226 Difference]: Without dead ends: 2411 [2020-04-18 07:41:03,876 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:41:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2020-04-18 07:41:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1721. [2020-04-18 07:41:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-04-18 07:41:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 6117 transitions. [2020-04-18 07:41:03,936 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 6117 transitions. Word has length 13 [2020-04-18 07:41:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:03,937 INFO L479 AbstractCegarLoop]: Abstraction has 1721 states and 6117 transitions. [2020-04-18 07:41:03,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 07:41:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 6117 transitions. [2020-04-18 07:41:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:03,939 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:03,940 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:04,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:41:04,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:04,145 INFO L82 PathProgramCache]: Analyzing trace with hash -160310730, now seen corresponding path program 1 times [2020-04-18 07:41:04,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:04,146 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2057704358] [2020-04-18 07:41:04,146 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:04,147 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:41:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 07:41:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:04,148 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:04,149 INFO L82 PathProgramCache]: Analyzing trace with hash -160310730, now seen corresponding path program 2 times [2020-04-18 07:41:04,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:04,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111907337] [2020-04-18 07:41:04,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-18 07:41:04,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111907337] [2020-04-18 07:41:04,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:04,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:04,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:04,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:04,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:41:04,207 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:04,227 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:04,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:04,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:04,228 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-04-18 07:41:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:04,236 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-04-18 07:41:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-04-18 07:41:04,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:04,236 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2057704358] [2020-04-18 07:41:04,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:04,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:04,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2057704358] [2020-04-18 07:41:04,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:41:04,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:04,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:04,238 INFO L87 Difference]: Start difference. First operand 1721 states and 6117 transitions. Second operand 5 states. [2020-04-18 07:41:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:04,317 INFO L93 Difference]: Finished difference Result 2966 states and 10590 transitions. [2020-04-18 07:41:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:04,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 07:41:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:04,323 INFO L225 Difference]: With dead ends: 2966 [2020-04-18 07:41:04,324 INFO L226 Difference]: Without dead ends: 2966 [2020-04-18 07:41:04,324 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:04,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-04-18 07:41:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1991. [2020-04-18 07:41:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-04-18 07:41:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2020-04-18 07:41:04,384 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2020-04-18 07:41:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:04,384 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2020-04-18 07:41:04,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:41:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2020-04-18 07:41:04,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:41:04,386 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:04,386 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:04,386 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1231775675, now seen corresponding path program 1 times [2020-04-18 07:41:04,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:04,387 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2000097073] [2020-04-18 07:41:04,387 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:04,388 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 07:41:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 07:41:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:41:04,389 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:04,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1231775675, now seen corresponding path program 2 times [2020-04-18 07:41:04,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:04,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461721818] [2020-04-18 07:41:04,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:04,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:41:04,413 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:41:04,413 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:41:04,414 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:41:04,414 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 07:41:04,425 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,425 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,426 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,433 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,433 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,433 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,433 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,434 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,434 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,434 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,434 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,434 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,435 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,435 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,435 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,435 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,436 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,436 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,436 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,436 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,437 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,437 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,437 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,437 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,439 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,439 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,439 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,439 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,444 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,444 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,447 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,450 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,450 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,450 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,450 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,451 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,451 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,451 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:04,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 07:41:04,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:41:04,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:41:04,460 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:41:04,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:41:04,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:41:04,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:41:04,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:41:04,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:41:04,462 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-04-18 07:41:04,462 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-04-18 07:41:04,479 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-04-18 07:41:04,479 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 07:41:04,481 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-04-18 07:41:04,490 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-04-18 07:41:04,505 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-04-18 07:41:04,506 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 07:41:04,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-04-18 07:41:04,515 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4940 [2020-04-18 07:41:04,515 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:41:06,307 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11021 [2020-04-18 07:41:06,307 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 07:41:06,307 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 133 flow [2020-04-18 07:41:15,337 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2020-04-18 07:41:15,337 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2020-04-18 07:41:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:41:15,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:15,338 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:15,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:15,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1689394107, now seen corresponding path program 1 times [2020-04-18 07:41:15,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:15,339 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1955440683] [2020-04-18 07:41:15,339 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:15,339 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:41:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:41:15,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:41:15,340 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1689394107, now seen corresponding path program 2 times [2020-04-18 07:41:15,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:15,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225001804] [2020-04-18 07:41:15,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:15,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225001804] [2020-04-18 07:41:15,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:15,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:15,382 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:15,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:15,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:41:15,383 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:15,401 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:15,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:15,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:15,402 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2020-04-18 07:41:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:15,410 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:41:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:41:15,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:15,411 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1955440683] [2020-04-18 07:41:15,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:15,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:15,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1955440683] [2020-04-18 07:41:15,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:41:15,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:15,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:15,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:15,412 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2020-04-18 07:41:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:16,387 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2020-04-18 07:41:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:16,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-04-18 07:41:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:16,585 INFO L225 Difference]: With dead ends: 50507 [2020-04-18 07:41:16,585 INFO L226 Difference]: Without dead ends: 50507 [2020-04-18 07:41:16,585 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2020-04-18 07:41:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2020-04-18 07:41:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2020-04-18 07:41:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2020-04-18 07:41:20,860 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2020-04-18 07:41:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:20,860 INFO L479 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2020-04-18 07:41:20,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:41:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2020-04-18 07:41:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:41:20,861 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:20,861 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:20,861 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash 10078299, now seen corresponding path program 1 times [2020-04-18 07:41:20,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:20,862 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1330227617] [2020-04-18 07:41:20,862 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:20,863 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:41:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:41:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:41:20,863 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash 10078299, now seen corresponding path program 2 times [2020-04-18 07:41:20,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:20,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179375862] [2020-04-18 07:41:20,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:20,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179375862] [2020-04-18 07:41:20,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:20,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:20,919 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:20,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:20,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:41:20,921 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:20,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:20,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:20,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:20,935 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 07:41:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:20,948 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 07:41:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 07:41:20,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:20,949 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1330227617] [2020-04-18 07:41:20,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:20,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:20,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1330227617] [2020-04-18 07:41:20,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:20,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:20,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:20,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:20,950 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 4 states. [2020-04-18 07:41:23,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:23,825 INFO L93 Difference]: Finished difference Result 56104 states and 316572 transitions. [2020-04-18 07:41:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:41:23,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 07:41:23,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:24,044 INFO L225 Difference]: With dead ends: 56104 [2020-04-18 07:41:24,044 INFO L226 Difference]: Without dead ends: 56104 [2020-04-18 07:41:24,044 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56104 states. [2020-04-18 07:41:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56104 to 48029. [2020-04-18 07:41:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48029 states. [2020-04-18 07:41:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 271277 transitions. [2020-04-18 07:41:29,215 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 271277 transitions. Word has length 9 [2020-04-18 07:41:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:29,215 INFO L479 AbstractCegarLoop]: Abstraction has 48029 states and 271277 transitions. [2020-04-18 07:41:29,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 271277 transitions. [2020-04-18 07:41:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:41:29,216 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:29,216 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:29,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:29,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:29,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1370666711, now seen corresponding path program 1 times [2020-04-18 07:41:29,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:29,216 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2099815953] [2020-04-18 07:41:29,217 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:29,217 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:41:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:41:29,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:41:29,218 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:29,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1370666711, now seen corresponding path program 2 times [2020-04-18 07:41:29,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:29,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188754419] [2020-04-18 07:41:29,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:41:29,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188754419] [2020-04-18 07:41:29,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:29,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:29,263 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:29,263 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:29,264 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:41:29,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:29,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:29,280 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2020-04-18 07:41:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:29,286 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:41:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:41:29,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:29,287 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2099815953] [2020-04-18 07:41:29,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:29,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:29,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2099815953] [2020-04-18 07:41:29,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:41:29,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:29,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:29,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:29,290 INFO L87 Difference]: Start difference. First operand 48029 states and 271277 transitions. Second operand 5 states. [2020-04-18 07:41:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:29,891 INFO L93 Difference]: Finished difference Result 60653 states and 341167 transitions. [2020-04-18 07:41:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:29,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:41:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:33,312 INFO L225 Difference]: With dead ends: 60653 [2020-04-18 07:41:33,312 INFO L226 Difference]: Without dead ends: 60653 [2020-04-18 07:41:33,313 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60653 states. [2020-04-18 07:41:35,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60653 to 50928. [2020-04-18 07:41:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50928 states. [2020-04-18 07:41:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50928 states to 50928 states and 287199 transitions. [2020-04-18 07:41:35,679 INFO L78 Accepts]: Start accepts. Automaton has 50928 states and 287199 transitions. Word has length 10 [2020-04-18 07:41:35,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:35,680 INFO L479 AbstractCegarLoop]: Abstraction has 50928 states and 287199 transitions. [2020-04-18 07:41:35,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:41:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 50928 states and 287199 transitions. [2020-04-18 07:41:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:35,680 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:35,680 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:35,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:35,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:35,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1344276643, now seen corresponding path program 1 times [2020-04-18 07:41:35,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:35,681 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [126362043] [2020-04-18 07:41:35,681 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:35,681 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:41:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 07:41:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:35,682 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:35,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1344276643, now seen corresponding path program 2 times [2020-04-18 07:41:35,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:35,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970480297] [2020-04-18 07:41:35,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:41:35,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970480297] [2020-04-18 07:41:35,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:35,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:35,725 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:35,726 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:35,727 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:41:35,727 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:35,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:35,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:35,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:35,742 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-04-18 07:41:35,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:35,755 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-04-18 07:41:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-04-18 07:41:35,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:35,756 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [126362043] [2020-04-18 07:41:35,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:35,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:35,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [126362043] [2020-04-18 07:41:35,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:35,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:35,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:35,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:35,758 INFO L87 Difference]: Start difference. First operand 50928 states and 287199 transitions. Second operand 4 states. [2020-04-18 07:41:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:36,522 INFO L93 Difference]: Finished difference Result 71415 states and 402930 transitions. [2020-04-18 07:41:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:41:36,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 07:41:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:37,673 INFO L225 Difference]: With dead ends: 71415 [2020-04-18 07:41:37,674 INFO L226 Difference]: Without dead ends: 71415 [2020-04-18 07:41:37,674 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71415 states. [2020-04-18 07:41:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71415 to 62439. [2020-04-18 07:41:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62439 states. [2020-04-18 07:41:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 352729 transitions. [2020-04-18 07:41:43,563 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 352729 transitions. Word has length 12 [2020-04-18 07:41:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:43,564 INFO L479 AbstractCegarLoop]: Abstraction has 62439 states and 352729 transitions. [2020-04-18 07:41:43,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 352729 transitions. [2020-04-18 07:41:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:43,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:43,565 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:43,565 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:43,565 INFO L82 PathProgramCache]: Analyzing trace with hash 559710068, now seen corresponding path program 1 times [2020-04-18 07:41:43,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:43,566 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [276994793] [2020-04-18 07:41:43,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:43,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-04-18 07:41:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 07:41:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:43,567 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1218878048, now seen corresponding path program 2 times [2020-04-18 07:41:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:43,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922661339] [2020-04-18 07:41:43,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:43,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922661339] [2020-04-18 07:41:43,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714585832] [2020-04-18 07:41:43,621 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 07:41:43,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:41:43,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:41:43,675 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 07:41:43,676 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:41:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:43,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:43,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2020-04-18 07:41:43,712 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:43,713 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:43,715 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 45 transitions. [2020-04-18 07:41:43,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:43,798 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:41:43,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:41:43,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:41:43,798 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 10 states. [2020-04-18 07:41:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:43,931 INFO L93 Difference]: Finished difference Result 43 states and 70 transitions. [2020-04-18 07:41:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2020-04-18 07:41:43,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:43,932 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [276994793] [2020-04-18 07:41:43,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:43,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:41:43,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [276994793] [2020-04-18 07:41:43,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 07:41:43,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:41:43,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-04-18 07:41:43,934 INFO L87 Difference]: Start difference. First operand 62439 states and 352729 transitions. Second operand 10 states. [2020-04-18 07:41:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:44,496 INFO L93 Difference]: Finished difference Result 9608 states and 40510 transitions. [2020-04-18 07:41:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 07:41:44,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 07:41:44,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:44,521 INFO L225 Difference]: With dead ends: 9608 [2020-04-18 07:41:44,522 INFO L226 Difference]: Without dead ends: 9608 [2020-04-18 07:41:44,522 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-04-18 07:41:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9608 states. [2020-04-18 07:41:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9608 to 6538. [2020-04-18 07:41:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-04-18 07:41:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2020-04-18 07:41:44,737 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2020-04-18 07:41:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:44,737 INFO L479 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2020-04-18 07:41:44,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 07:41:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2020-04-18 07:41:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:44,738 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:44,738 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:44,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:41:44,940 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash -658320024, now seen corresponding path program 1 times [2020-04-18 07:41:44,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:44,941 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1469415056] [2020-04-18 07:41:44,942 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:44,942 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:41:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 07:41:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:41:44,943 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:44,943 INFO L82 PathProgramCache]: Analyzing trace with hash -658320024, now seen corresponding path program 2 times [2020-04-18 07:41:44,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:44,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105056308] [2020-04-18 07:41:44,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-18 07:41:45,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105056308] [2020-04-18 07:41:45,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:45,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:45,017 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:45,018 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:45,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:41:45,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:45,038 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:45,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:45,038 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-04-18 07:41:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:45,046 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-04-18 07:41:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-04-18 07:41:45,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:45,047 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1469415056] [2020-04-18 07:41:45,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:45,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:45,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1469415056] [2020-04-18 07:41:45,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:41:45,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:45,049 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2020-04-18 07:41:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:45,229 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2020-04-18 07:41:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:45,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 07:41:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:45,269 INFO L225 Difference]: With dead ends: 11626 [2020-04-18 07:41:45,269 INFO L226 Difference]: Without dead ends: 11626 [2020-04-18 07:41:45,269 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2020-04-18 07:41:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2020-04-18 07:41:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-04-18 07:41:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2020-04-18 07:41:46,321 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2020-04-18 07:41:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:46,321 INFO L479 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2020-04-18 07:41:46,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:41:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2020-04-18 07:41:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:41:46,322 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:46,322 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:46,323 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1285367916, now seen corresponding path program 1 times [2020-04-18 07:41:46,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:46,323 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [353098866] [2020-04-18 07:41:46,324 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:46,324 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 07:41:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 07:41:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:41:46,325 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1285367916, now seen corresponding path program 2 times [2020-04-18 07:41:46,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:46,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520108543] [2020-04-18 07:41:46,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-18 07:41:46,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520108543] [2020-04-18 07:41:46,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:46,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:46,370 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:46,370 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:46,372 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 07:41:46,372 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:46,386 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:46,387 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 07:41:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:46,400 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-04-18 07:41:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-04-18 07:41:46,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:46,401 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [353098866] [2020-04-18 07:41:46,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:46,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:46,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [353098866] [2020-04-18 07:41:46,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:46,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:46,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:46,402 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2020-04-18 07:41:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:46,496 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2020-04-18 07:41:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:41:46,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 07:41:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:46,520 INFO L225 Difference]: With dead ends: 6970 [2020-04-18 07:41:46,520 INFO L226 Difference]: Without dead ends: 6970 [2020-04-18 07:41:46,520 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-04-18 07:41:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2020-04-18 07:41:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-04-18 07:41:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2020-04-18 07:41:46,758 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2020-04-18 07:41:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:46,758 INFO L479 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2020-04-18 07:41:46,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2020-04-18 07:41:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:41:46,760 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:46,760 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:46,760 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:46,760 INFO L82 PathProgramCache]: Analyzing trace with hash 753296421, now seen corresponding path program 1 times [2020-04-18 07:41:46,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:46,760 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2025461789] [2020-04-18 07:41:46,761 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:46,761 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2020-04-18 07:41:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-04-18 07:41:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:41:46,762 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash 753296421, now seen corresponding path program 2 times [2020-04-18 07:41:46,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:46,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226792821] [2020-04-18 07:41:46,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-18 07:41:46,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226792821] [2020-04-18 07:41:46,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:46,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:46,830 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:46,831 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:46,832 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2020-04-18 07:41:46,832 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:46,853 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:46,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:46,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:46,853 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-04-18 07:41:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:46,860 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-04-18 07:41:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-04-18 07:41:46,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:46,861 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2025461789] [2020-04-18 07:41:46,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:46,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:46,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2025461789] [2020-04-18 07:41:46,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:41:46,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:41:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:46,862 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2020-04-18 07:41:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:47,000 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2020-04-18 07:41:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:47,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 07:41:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:47,028 INFO L225 Difference]: With dead ends: 10825 [2020-04-18 07:41:47,028 INFO L226 Difference]: Without dead ends: 10825 [2020-04-18 07:41:47,029 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-04-18 07:41:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2020-04-18 07:41:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-04-18 07:41:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2020-04-18 07:41:47,258 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2020-04-18 07:41:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:47,259 INFO L479 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2020-04-18 07:41:47,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:41:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2020-04-18 07:41:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 07:41:47,263 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:47,263 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:47,263 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:47,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1848176610, now seen corresponding path program 1 times [2020-04-18 07:41:47,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:47,264 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1884370059] [2020-04-18 07:41:47,264 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:47,265 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-04-18 07:41:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 07:41:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 07:41:47,266 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:47,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1848176610, now seen corresponding path program 2 times [2020-04-18 07:41:47,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:47,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807530111] [2020-04-18 07:41:47,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:47,283 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:41:47,283 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:41:47,283 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:41:47,284 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:41:47,284 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 07:41:47,295 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,295 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,295 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,295 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,295 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,297 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,298 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,298 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,298 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,298 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,298 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,298 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,299 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,299 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,299 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,299 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,299 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,299 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,300 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,301 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,301 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,301 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,301 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,301 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,301 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,303 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,303 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,303 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,303 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,305 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,305 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,306 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,307 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,307 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,307 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,308 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,308 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,313 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,313 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,314 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,314 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,316 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,317 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,318 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,319 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,320 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,320 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,320 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,321 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,321 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,321 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,322 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,322 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:47,323 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 07:41:47,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:41:47,323 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:41:47,324 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:41:47,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:41:47,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:41:47,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:41:47,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:41:47,324 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:41:47,325 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-04-18 07:41:47,325 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-04-18 07:41:47,341 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-04-18 07:41:47,341 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 07:41:47,343 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-04-18 07:41:47,351 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-04-18 07:41:47,367 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-04-18 07:41:47,367 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 07:41:47,369 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-04-18 07:41:47,376 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 7020 [2020-04-18 07:41:47,377 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:41:49,147 INFO L206 etLargeBlockEncoding]: Checked pairs total: 17367 [2020-04-18 07:41:49,147 INFO L214 etLargeBlockEncoding]: Total number of compositions: 72 [2020-04-18 07:41:49,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 166 flow Received shutdown request... [2020-04-18 07:45:02,529 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 07:45:02,532 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 07:45:02,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:45:02 BasicIcfg [2020-04-18 07:45:02,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:45:02,535 INFO L168 Benchmark]: Toolchain (without parser) took 251467.41 ms. Allocated memory was 138.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 102.3 MB in the beginning and 1.1 GB in the end (delta: -957.8 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2020-04-18 07:45:02,536 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 07:45:02,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.70 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.3 MB in the beginning and 162.8 MB in the end (delta: -62.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:02,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.79 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 160.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:02,537 INFO L168 Benchmark]: Boogie Preprocessor took 25.43 ms. Allocated memory is still 203.4 MB. Free memory was 160.9 MB in the beginning and 159.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:02,537 INFO L168 Benchmark]: RCFGBuilder took 455.15 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 137.9 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:02,538 INFO L168 Benchmark]: TraceAbstraction took 250259.16 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 137.9 MB in the beginning and 1.1 GB in the end (delta: -922.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2020-04-18 07:45:02,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.70 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.3 MB in the beginning and 162.8 MB in the end (delta: -62.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.79 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 160.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.43 ms. Allocated memory is still 203.4 MB. Free memory was 160.9 MB in the beginning and 159.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.15 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 137.9 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250259.16 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 137.9 MB in the beginning and 1.1 GB in the end (delta: -922.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 32 ProgramPointsBefore, 12 ProgramPointsAfterwards, 32 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 133 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 174 CheckedPairsTotal, 27 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 46 ProgramPointsBefore, 22 ProgramPointsAfterwards, 46 TransitionsBefore, 21 TransitionsAfterwards, 884 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 460 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1690 CheckedPairsTotal, 31 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 60 ProgramPointsBefore, 30 ProgramPointsAfterwards, 60 TransitionsBefore, 27 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 914 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 3466 CheckedPairsTotal, 40 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 74 ProgramPointsBefore, 38 ProgramPointsAfterwards, 74 TransitionsBefore, 35 TransitionsAfterwards, 3224 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 1534 VarBasedMoverChecksPositive, 75 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 6771 CheckedPairsTotal, 49 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 88 ProgramPointsBefore, 46 ProgramPointsAfterwards, 88 TransitionsBefore, 44 TransitionsAfterwards, 4940 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 2371 VarBasedMoverChecksPositive, 155 VarBasedMoverChecksNegative, 107 SemBasedMoverChecksPositive, 76 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 11021 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 102 ProgramPointsBefore, 54 ProgramPointsAfterwards, 102 TransitionsBefore, 53 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 3582 VarBasedMoverChecksPositive, 168 VarBasedMoverChecksNegative, 103 SemBasedMoverChecksPositive, 92 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 0 MoverChecksTotal, 17367 CheckedPairsTotal, 72 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 690). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 53 transitions, 166 flow. Already constructed 206728 states. Currently 25281 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 249.9s, OverallIterations: 24, TraceHistogramMax: 6, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 210.6s, HoareTripleCheckerStatistics: 1020 SDtfs, 913 SDslu, 1572 SDs, 0 SdLazy, 1924 SolverSat, 132 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62439occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 58736 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown