/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-wmm/safe037_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:40,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:40,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:40,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:40,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:40,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:40,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:40,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:40,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:40,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:40,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:40,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:40,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:40,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:40,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:40,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:40,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:40,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:40,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:40,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:40,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:40,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:40,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:40,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:40,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:40,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:40,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:40,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:40,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:40,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:40,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:40,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:40,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:40,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:40,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:40,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:40,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:40,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:40,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:40,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:40,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:40,771 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 11:27:40,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:40,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:40,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:40,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:40,799 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:40,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:40,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:40,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:40,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:40,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:40,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:40,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:40,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:40,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:40,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:40,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:40,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:40,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:40,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:40,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:40,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:40,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:40,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:40,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:40,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:40,804 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:40,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:40,804 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:40,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:40,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:41,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:41,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:41,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:41,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:41,168 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:41,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2020-04-18 11:27:41,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d689cc6/5c68c421e6f643b39b2d1120ba392e08/FLAG4943c095b [2020-04-18 11:27:41,835 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:41,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2020-04-18 11:27:41,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d689cc6/5c68c421e6f643b39b2d1120ba392e08/FLAG4943c095b [2020-04-18 11:27:42,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d689cc6/5c68c421e6f643b39b2d1120ba392e08 [2020-04-18 11:27:42,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:42,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:42,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:42,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:42,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:42,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bebbcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42, skipping insertion in model container [2020-04-18 11:27:42,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:42,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:42,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:42,754 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:42,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:42,879 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:42,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42 WrapperNode [2020-04-18 11:27:42,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:42,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:42,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:42,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:42,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:42,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:42,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:42,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:42,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (1/1) ... [2020-04-18 11:27:42,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:42,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:42,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:42,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:42,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (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 11:27:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:43,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:27:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:27:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:43,032 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 11:27:43,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:43,458 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:43,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:43 BoogieIcfgContainer [2020-04-18 11:27:43,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:43,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:43,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:43,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:43,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:42" (1/3) ... [2020-04-18 11:27:43,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab47936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:43, skipping insertion in model container [2020-04-18 11:27:43,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:42" (2/3) ... [2020-04-18 11:27:43,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab47936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:43, skipping insertion in model container [2020-04-18 11:27:43,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:43" (3/3) ... [2020-04-18 11:27:43,476 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2020-04-18 11:27:43,485 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:43,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:43,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:43,494 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:43,520 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,520 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,520 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,521 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,521 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,521 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,522 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,523 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,523 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,524 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,524 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,524 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,524 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,525 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,530 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,530 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,530 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,530 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,538 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,538 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,539 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,539 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,551 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,551 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,551 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,552 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:43,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:27:43,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:43,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:43,586 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:43,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:43,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:43,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:43,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:43,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:43,602 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:43,604 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:43,650 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:43,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:43,656 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:43,659 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:43,680 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:43,680 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:43,681 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:43,684 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:27:43,685 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:45,325 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 11:27:45,433 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 11:27:45,433 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:27:45,437 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:27:45,467 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:27:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:27:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:45,478 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:45,479 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:45,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 11:27:45,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:45,493 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [330769642] [2020-04-18 11:27:45,509 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:45,522 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:27:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:45,524 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:45,525 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 11:27:45,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:45,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671781699] [2020-04-18 11:27:45,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:45,732 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 11:27:45,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671781699] [2020-04-18 11:27:45,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:45,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:45,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:45,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:45,740 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:45,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:45,744 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:45,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:45,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:45,751 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:27:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:45,755 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:27:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:27:45,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:45,757 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [330769642] [2020-04-18 11:27:45,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:45,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:45,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [330769642] [2020-04-18 11:27:45,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:27:45,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:45,764 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:27:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:45,786 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:27:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:27:45,788 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:27:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:45,818 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:27:45,820 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:27:45,821 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:27:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:27:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:27:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:27:45,895 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:27:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:45,896 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:27:45,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:27:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:27:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:45,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:45,898 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:45,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:45,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:45,899 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 11:27:45,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:45,899 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1020031191] [2020-04-18 11:27:45,900 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:45,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:27:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:45,901 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 11:27:45,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:45,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3552899] [2020-04-18 11:27:45,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:45,995 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 11:27:45,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3552899] [2020-04-18 11:27:45,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:45,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:45,997 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:45,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:45,998 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:45,999 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:46,002 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:46,004 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:27:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,004 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:27:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:27:46,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:46,005 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1020031191] [2020-04-18 11:27:46,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:46,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:46,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1020031191] [2020-04-18 11:27:46,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:27:46,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:46,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:46,007 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 11:27:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,042 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 11:27:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:27:46,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:27:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:46,050 INFO L225 Difference]: With dead ends: 217 [2020-04-18 11:27:46,050 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 11:27:46,053 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:46,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 11:27:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 11:27:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 11:27:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 11:27:46,092 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 11:27:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:46,093 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 11:27:46,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:27:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 11:27:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:46,094 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:46,095 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:46,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 11:27:46,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:46,096 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [35938025] [2020-04-18 11:27:46,096 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,098 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 11:27:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:27:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:46,099 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 11:27:46,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:46,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051610655] [2020-04-18 11:27:46,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:46,186 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 11:27:46,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051610655] [2020-04-18 11:27:46,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:46,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:46,187 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:46,189 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 11:27:46,191 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:46,200 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:46,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:46,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:46,201 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 11:27:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,208 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 11:27:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 11:27:46,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:46,209 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [35938025] [2020-04-18 11:27:46,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:46,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:46,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [35938025] [2020-04-18 11:27:46,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:46,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:46,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:46,211 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 11:27:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,233 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 11:27:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:27:46,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 11:27:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:46,235 INFO L225 Difference]: With dead ends: 136 [2020-04-18 11:27:46,236 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 11:27:46,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 11:27:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 11:27:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 11:27:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 11:27:46,258 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 11:27:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:46,259 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 11:27:46,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 11:27:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:46,260 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:46,260 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:46,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 11:27:46,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:46,265 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [329913729] [2020-04-18 11:27:46,265 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 11:27:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 11:27:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:46,274 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 11:27:46,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:46,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383300475] [2020-04-18 11:27:46,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:46,390 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 11:27:46,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383300475] [2020-04-18 11:27:46,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:46,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:46,392 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:46,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,397 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:27:46,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:46,409 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:46,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:46,410 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 11:27:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,423 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 11:27:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 11:27:46,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:46,425 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [329913729] [2020-04-18 11:27:46,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:46,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:46,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [329913729] [2020-04-18 11:27:46,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:46,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:46,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:46,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:46,426 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 11:27:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,459 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 11:27:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:46,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 11:27:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:46,460 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:27:46,460 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 11:27:46,461 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 11:27:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 11:27:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 11:27:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 11:27:46,466 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 11:27:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:46,466 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 11:27:46,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 11:27:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:46,468 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:46,468 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:46,468 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 11:27:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:46,469 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1820603810] [2020-04-18 11:27:46,470 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 11:27:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:27:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:46,483 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 11:27:46,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:46,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294910115] [2020-04-18 11:27:46,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:46,577 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 11:27:46,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294910115] [2020-04-18 11:27:46,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:46,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:46,580 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:46,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,592 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 11:27:46,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:46,617 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:27:46,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:46,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:46,619 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 11:27:46,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,669 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 11:27:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 11:27:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:46,671 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 11:27:46,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:46,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501856375] [2020-04-18 11:27:46,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:46,745 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 11:27:46,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501856375] [2020-04-18 11:27:46,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:46,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:46,746 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:46,748 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 11:27:46,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:46,829 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:46,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:46,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:27:46,829 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 11:27:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:46,878 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 11:27:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 11:27:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:46,880 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 11:27:46,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:46,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455767162] [2020-04-18 11:27:46,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:46,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455767162] [2020-04-18 11:27:46,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:46,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:46,954 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:46,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:46,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 11:27:46,967 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:46,993 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:46,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:27:46,994 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 11:27:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:47,054 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 11:27:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 11:27:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:47,057 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 11:27:47,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:47,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663171657] [2020-04-18 11:27:47,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:47,148 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 11:27:47,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663171657] [2020-04-18 11:27:47,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:47,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:47,149 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:47,151 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:47,158 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 11:27:47,159 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:47,251 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:27:47,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:47,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:27:47,252 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 11:27:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:47,327 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 11:27:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 11:27:47,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:47,332 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1820603810] [2020-04-18 11:27:47,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:47,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:47,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1820603810] [2020-04-18 11:27:47,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:27:47,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:47,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:27:47,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:27:47,334 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 11:27:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,764 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 11:27:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 11:27:48,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 11:27:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:48,765 INFO L225 Difference]: With dead ends: 240 [2020-04-18 11:27:48,765 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:48,767 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 11:27:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:48,769 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:27:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:48,769 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:48,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:27:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:48,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:48,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:48 BasicIcfg [2020-04-18 11:27:48,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:48,776 INFO L168 Benchmark]: Toolchain (without parser) took 6603.89 ms. Allocated memory was 143.7 MB in the beginning and 293.1 MB in the end (delta: 149.4 MB). Free memory was 99.6 MB in the beginning and 113.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 135.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:48,776 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 143.7 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:27:48,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.80 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 97.6 MB in the beginning and 157.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:48,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 200.8 MB. Free memory was 157.6 MB in the beginning and 155.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:48,779 INFO L168 Benchmark]: Boogie Preprocessor took 28.00 ms. Allocated memory is still 200.8 MB. Free memory was 155.3 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:48,779 INFO L168 Benchmark]: RCFGBuilder took 507.85 ms. Allocated memory is still 200.8 MB. Free memory was 153.9 MB in the beginning and 131.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:48,780 INFO L168 Benchmark]: TraceAbstraction took 5304.90 ms. Allocated memory was 200.8 MB in the beginning and 293.1 MB in the end (delta: 92.3 MB). Free memory was 130.9 MB in the beginning and 113.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:48,784 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 143.7 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.80 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 97.6 MB in the beginning and 157.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 200.8 MB. Free memory was 157.6 MB in the beginning and 155.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.00 ms. Allocated memory is still 200.8 MB. Free memory was 155.3 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.85 ms. Allocated memory is still 200.8 MB. Free memory was 153.9 MB in the beginning and 131.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5304.90 ms. Allocated memory was 200.8 MB in the beginning and 293.1 MB in the end (delta: 92.3 MB). Free memory was 130.9 MB in the beginning and 113.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 663 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 106 SDtfs, 192 SDslu, 293 SDs, 0 SdLazy, 349 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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 proved your program to be correct! Received shutdown request...