/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:09:38,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:09:38,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:09:38,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:09:38,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:09:38,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:09:38,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:09:38,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:09:38,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:09:38,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:09:38,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:09:38,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:09:38,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:09:38,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:09:38,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:09:38,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:09:38,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:09:38,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:09:38,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:09:38,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:09:38,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:09:38,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:09:38,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:09:38,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:09:38,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:09:38,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:09:38,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:09:38,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:09:38,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:09:38,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:09:38,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:09:38,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:09:38,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:09:38,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:09:38,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:09:38,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:09:38,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:09:38,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:09:38,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:09:38,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:09:38,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:09:38,774 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.epf [2020-04-17 22:09:38,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:09:38,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:09:38,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:09:38,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:09:38,801 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:09:38,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:09:38,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:09:38,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:09:38,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:09:38,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:09:38,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:09:38,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:09:38,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:09:38,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:09:38,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:09:38,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:09:38,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:09:38,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:09:38,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:09:38,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:09:38,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:09:38,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:09:38,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:09:38,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:09:38,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:09:38,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:09:38,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:09:38,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:09:38,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:09:39,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:09:39,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:09:39,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:09:39,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:09:39,110 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:09:39,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-17 22:09:39,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85745ed26/411a8f559259432c9fed6ff001818e96/FLAG6af8f3126 [2020-04-17 22:09:39,834 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:09:39,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-17 22:09:39,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85745ed26/411a8f559259432c9fed6ff001818e96/FLAG6af8f3126 [2020-04-17 22:09:40,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85745ed26/411a8f559259432c9fed6ff001818e96 [2020-04-17 22:09:40,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:09:40,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:09:40,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:09:40,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:09:40,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:09:40,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:40,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1841151d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40, skipping insertion in model container [2020-04-17 22:09:40,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:40,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:09:40,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:09:40,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:09:40,775 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:09:40,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:09:40,912 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:09:40,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40 WrapperNode [2020-04-17 22:09:40,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:09:40,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:09:40,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:09:40,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:09:40,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:40,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:40,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:09:40,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:09:40,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:09:40,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:09:40,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:40,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:41,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:41,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:41,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:41,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:41,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (1/1) ... [2020-04-17 22:09:41,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:09:41,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:09:41,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:09:41,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:09:41,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (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 [2020-04-17 22:09:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:09:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:09:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:09:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:09:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:09:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:09:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:09:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:09:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:09:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:09:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:09:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:09:41,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:09:41,079 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:09:41,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:09:41,458 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:09:41,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:09:41 BoogieIcfgContainer [2020-04-17 22:09:41,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:09:41,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:09:41,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:09:41,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:09:41,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:09:40" (1/3) ... [2020-04-17 22:09:41,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a66eb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:09:41, skipping insertion in model container [2020-04-17 22:09:41,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:40" (2/3) ... [2020-04-17 22:09:41,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a66eb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:09:41, skipping insertion in model container [2020-04-17 22:09:41,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:09:41" (3/3) ... [2020-04-17 22:09:41,480 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-04-17 22:09:41,491 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:09:41,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:09:41,497 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:09:41,498 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:09:41,528 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,528 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,529 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,531 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,531 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,532 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,533 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,533 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,533 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,534 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,534 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,535 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,536 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,536 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,536 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,536 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,537 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,537 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,543 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,544 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,544 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,544 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,553 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,553 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,554 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,554 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,558 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,558 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,559 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,559 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:41,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:09:41,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:09:41,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:09:41,591 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:09:41,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:09:41,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:09:41,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:09:41,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:09:41,592 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:09:41,608 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-04-17 22:09:41,610 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-17 22:09:41,663 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-17 22:09:41,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:09:41,669 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 22:09:41,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-17 22:09:41,690 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-17 22:09:41,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:09:41,691 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 22:09:41,694 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-17 22:09:41,695 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:09:43,218 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-04-17 22:09:43,579 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-04-17 22:09:43,579 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-17 22:09:43,583 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 22:09:43,604 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-17 22:09:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-17 22:09:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:09:43,614 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:43,615 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:43,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-04-17 22:09:43,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:43,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199360675] [2020-04-17 22:09:43,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:43,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199360675] [2020-04-17 22:09:43,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:43,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:09:43,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327627470] [2020-04-17 22:09:43,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:43,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:43,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:43,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:43,885 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-17 22:09:43,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:43,926 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-04-17 22:09:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:43,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:09:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:43,956 INFO L225 Difference]: With dead ends: 220 [2020-04-17 22:09:43,956 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 22:09:43,958 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 22:09:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 22:09:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 22:09:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-04-17 22:09:44,057 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-04-17 22:09:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,058 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-04-17 22:09:44,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-04-17 22:09:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:09:44,060 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,060 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-04-17 22:09:44,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192631754] [2020-04-17 22:09:44,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192631754] [2020-04-17 22:09:44,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:09:44,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071387011] [2020-04-17 22:09:44,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:44,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,175 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-04-17 22:09:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,191 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-04-17 22:09:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:44,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:09:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,194 INFO L225 Difference]: With dead ends: 166 [2020-04-17 22:09:44,194 INFO L226 Difference]: Without dead ends: 166 [2020-04-17 22:09:44,195 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-17 22:09:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-17 22:09:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-17 22:09:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-04-17 22:09:44,212 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-04-17 22:09:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,212 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-04-17 22:09:44,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-04-17 22:09:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:09:44,214 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,214 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,214 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-04-17 22:09:44,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854245653] [2020-04-17 22:09:44,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854245653] [2020-04-17 22:09:44,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:09:44,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036044050] [2020-04-17 22:09:44,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:44,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:44,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,287 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-04-17 22:09:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,295 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-04-17 22:09:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:44,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:09:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,297 INFO L225 Difference]: With dead ends: 158 [2020-04-17 22:09:44,298 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 22:09:44,298 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 22:09:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 22:09:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 22:09:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-04-17 22:09:44,312 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-04-17 22:09:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,312 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-04-17 22:09:44,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-04-17 22:09:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:09:44,314 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,315 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-04-17 22:09:44,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626368276] [2020-04-17 22:09:44,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626368276] [2020-04-17 22:09:44,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665071052] [2020-04-17 22:09:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:09:44,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:09:44,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:09:44,390 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-04-17 22:09:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,417 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-04-17 22:09:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:09:44,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:09:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,421 INFO L225 Difference]: With dead ends: 218 [2020-04-17 22:09:44,421 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 22:09:44,421 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 22:09:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 22:09:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 22:09:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-04-17 22:09:44,437 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-04-17 22:09:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,437 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-04-17 22:09:44,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:09:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-04-17 22:09:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:09:44,439 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,439 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-04-17 22:09:44,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551953934] [2020-04-17 22:09:44,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551953934] [2020-04-17 22:09:44,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:44,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512987750] [2020-04-17 22:09:44,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:09:44,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:09:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:09:44,524 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-04-17 22:09:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,566 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-04-17 22:09:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:09:44,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:09:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,572 INFO L225 Difference]: With dead ends: 167 [2020-04-17 22:09:44,572 INFO L226 Difference]: Without dead ends: 125 [2020-04-17 22:09:44,573 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-17 22:09:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-17 22:09:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-17 22:09:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-04-17 22:09:44,583 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-04-17 22:09:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,584 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-04-17 22:09:44,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:09:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-04-17 22:09:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:09:44,585 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,585 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-04-17 22:09:44,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611468858] [2020-04-17 22:09:44,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611468858] [2020-04-17 22:09:44,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:09:44,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779063080] [2020-04-17 22:09:44,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:09:44,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:09:44,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:44,641 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-04-17 22:09:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,687 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-17 22:09:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:09:44,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:09:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,690 INFO L225 Difference]: With dead ends: 121 [2020-04-17 22:09:44,690 INFO L226 Difference]: Without dead ends: 93 [2020-04-17 22:09:44,690 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:09:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-17 22:09:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-17 22:09:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-17 22:09:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-17 22:09:44,719 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-04-17 22:09:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,720 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-17 22:09:44,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:09:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-17 22:09:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:09:44,721 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,721 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,721 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-04-17 22:09:44,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437046089] [2020-04-17 22:09:44,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437046089] [2020-04-17 22:09:44,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:44,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857069684] [2020-04-17 22:09:44,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:44,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:44,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,772 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-04-17 22:09:44,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,784 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-04-17 22:09:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:44,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-17 22:09:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,786 INFO L225 Difference]: With dead ends: 110 [2020-04-17 22:09:44,786 INFO L226 Difference]: Without dead ends: 88 [2020-04-17 22:09:44,786 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-17 22:09:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-04-17 22:09:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-17 22:09:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-04-17 22:09:44,791 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-04-17 22:09:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,791 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-04-17 22:09:44,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-04-17 22:09:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:09:44,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,793 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,793 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,793 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-04-17 22:09:44,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413997615] [2020-04-17 22:09:44,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413997615] [2020-04-17 22:09:44,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:44,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548595233] [2020-04-17 22:09:44,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:44,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:44,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,824 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-04-17 22:09:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,834 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-04-17 22:09:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:44,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 22:09:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,836 INFO L225 Difference]: With dead ends: 104 [2020-04-17 22:09:44,836 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 22:09:44,836 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 22:09:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-04-17 22:09:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-17 22:09:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-04-17 22:09:44,839 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-04-17 22:09:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,840 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-04-17 22:09:44,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-04-17 22:09:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:09:44,840 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,841 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,841 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,841 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-04-17 22:09:44,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935573546] [2020-04-17 22:09:44,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935573546] [2020-04-17 22:09:44,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:09:44,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444713456] [2020-04-17 22:09:44,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:09:44,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:09:44,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:09:44,876 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-04-17 22:09:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:44,896 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-04-17 22:09:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:09:44,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:09:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:44,898 INFO L225 Difference]: With dead ends: 71 [2020-04-17 22:09:44,898 INFO L226 Difference]: Without dead ends: 64 [2020-04-17 22:09:44,898 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:44,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-17 22:09:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-04-17 22:09:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-04-17 22:09:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-04-17 22:09:44,902 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-04-17 22:09:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:44,902 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-04-17 22:09:44,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:09:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-04-17 22:09:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:09:44,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:44,903 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:44,903 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-04-17 22:09:44,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:44,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100534845] [2020-04-17 22:09:44,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:44,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100534845] [2020-04-17 22:09:44,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:44,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:09:44,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154179572] [2020-04-17 22:09:44,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:09:44,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:44,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:09:44,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:09:44,972 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-04-17 22:09:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:45,003 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-04-17 22:09:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:09:45,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:09:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:45,003 INFO L225 Difference]: With dead ends: 58 [2020-04-17 22:09:45,003 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:09:45,004 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:09:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:09:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:09:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:09:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:09:45,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 22:09:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:45,005 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:09:45,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:09:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:09:45,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:09:45,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:09:45 BasicIcfg [2020-04-17 22:09:45,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:09:45,014 INFO L168 Benchmark]: Toolchain (without parser) took 4860.09 ms. Allocated memory was 145.2 MB in the beginning and 247.5 MB in the end (delta: 102.2 MB). Free memory was 101.3 MB in the beginning and 172.4 MB in the end (delta: -71.1 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,015 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.15 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 158.5 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.39 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,017 INFO L168 Benchmark]: Boogie Preprocessor took 26.26 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,018 INFO L168 Benchmark]: RCFGBuilder took 447.22 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 133.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,019 INFO L168 Benchmark]: TraceAbstraction took 3546.12 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 133.3 MB in the beginning and 172.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:45,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.15 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 158.5 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.39 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.26 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.22 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 133.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3546.12 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 133.3 MB in the beginning and 172.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...