/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:51:36,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:51:36,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:51:36,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:51:36,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:51:36,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:51:36,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:51:36,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:51:36,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:51:36,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:51:36,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:51:36,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:51:36,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:51:36,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:51:36,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:51:36,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:51:36,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:51:36,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:51:36,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:51:36,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:51:36,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:51:36,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:51:36,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:51:36,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:51:36,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:51:36,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:51:36,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:51:36,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:51:36,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:51:36,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:51:36,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:51:36,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:51:36,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:51:36,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:51:36,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:51:36,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:51:36,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:51:36,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:51:36,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:51:36,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:51:36,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:51:36,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:51:36,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:51:36,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:51:36,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:51:36,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:51:36,852 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:51:36,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:51:36,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:51:36,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:51:36,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:51:36,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:51:36,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:51:36,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:51:36,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:51:36,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:51:36,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:51:36,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:51:36,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:51:36,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:51:36,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:51:36,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:51:36,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:51:36,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:51:36,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:51:36,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:51:36,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:51:36,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:51:36,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:51:36,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:51:36,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:51:36,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:51:37,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:51:37,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:51:37,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:51:37,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:51:37,144 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:51:37,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-04-17 17:51:37,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8ebf055/470b33e8d3674ad2897bb1f2c179caaa/FLAGbc08a66ab [2020-04-17 17:51:37,754 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:51:37,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-04-17 17:51:37,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8ebf055/470b33e8d3674ad2897bb1f2c179caaa/FLAGbc08a66ab [2020-04-17 17:51:38,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8ebf055/470b33e8d3674ad2897bb1f2c179caaa [2020-04-17 17:51:38,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:51:38,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:51:38,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:51:38,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:51:38,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:51:38,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6abf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38, skipping insertion in model container [2020-04-17 17:51:38,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:51:38,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:51:38,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:51:38,654 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:51:38,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:51:38,816 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:51:38,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38 WrapperNode [2020-04-17 17:51:38,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:51:38,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:51:38,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:51:38,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:51:38,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:51:38,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:51:38,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:51:38,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:51:38,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (1/1) ... [2020-04-17 17:51:38,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:51:38,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:51:38,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:51:38,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:51:38,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (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 17:51:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:51:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:51:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:51:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:51:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:51:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:51:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:51:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:51:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:51:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:51:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:51:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:51:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:51:38,981 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 17:51:39,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:51:39,351 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:51:39,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:51:39 BoogieIcfgContainer [2020-04-17 17:51:39,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:51:39,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:51:39,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:51:39,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:51:39,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:51:38" (1/3) ... [2020-04-17 17:51:39,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d352fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:51:39, skipping insertion in model container [2020-04-17 17:51:39,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:38" (2/3) ... [2020-04-17 17:51:39,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d352fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:51:39, skipping insertion in model container [2020-04-17 17:51:39,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:51:39" (3/3) ... [2020-04-17 17:51:39,363 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-04-17 17:51:39,373 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:51:39,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:51:39,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:51:39,381 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:51:39,414 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,415 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,415 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,416 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,416 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,417 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,417 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,417 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,418 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,418 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,418 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,419 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,420 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,420 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,421 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,421 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,422 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,422 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,428 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,428 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,429 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,429 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,448 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,449 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,449 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,449 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,451 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,451 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,451 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,452 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:39,473 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:51:39,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:51:39,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:51:39,490 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:51:39,490 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:51:39,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:51:39,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:51:39,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:51:39,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:51:39,507 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 17:51:39,509 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 17:51:39,552 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 17:51:39,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:51:39,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:51:39,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 17:51:39,581 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 17:51:39,581 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:51:39,582 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:51:39,584 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:51:39,585 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:51:41,377 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-17 17:51:41,377 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 17:51:41,381 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 17:51:41,412 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 17:51:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 17:51:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:51:41,427 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:41,429 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:41,429 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:41,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-17 17:51:41,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:41,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574713783] [2020-04-17 17:51:41,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:41,792 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 17:51:41,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574713783] [2020-04-17 17:51:41,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:41,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:51:41,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638795411] [2020-04-17 17:51:41,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:51:41,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:41,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:51:41,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:51:41,819 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 17:51:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:41,884 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 17:51:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:51:41,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:51:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:41,917 INFO L225 Difference]: With dead ends: 282 [2020-04-17 17:51:41,917 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 17:51:41,919 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 17:51:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 17:51:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 17:51:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 17:51:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 17:51:41,991 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 17:51:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:41,992 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 17:51:41,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:51:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 17:51:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:51:41,994 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:41,994 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:41,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-17 17:51:41,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:41,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975293364] [2020-04-17 17:51:41,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,070 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 17:51:42,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975293364] [2020-04-17 17:51:42,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:42,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23977304] [2020-04-17 17:51:42,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:42,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:42,075 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 17:51:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,104 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-17 17:51:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:51:42,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:51:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,107 INFO L225 Difference]: With dead ends: 278 [2020-04-17 17:51:42,107 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 17:51:42,108 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 17:51:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 17:51:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 17:51:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 17:51:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-17 17:51:42,126 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-17 17:51:42,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,126 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-17 17:51:42,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-17 17:51:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:51:42,128 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,128 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,129 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-17 17:51:42,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963712274] [2020-04-17 17:51:42,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,187 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 17:51:42,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963712274] [2020-04-17 17:51:42,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:51:42,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266733940] [2020-04-17 17:51:42,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:42,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:42,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:42,190 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-17 17:51:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,227 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-17 17:51:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:42,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 17:51:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,229 INFO L225 Difference]: With dead ends: 218 [2020-04-17 17:51:42,229 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 17:51:42,229 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 17:51:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 17:51:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 17:51:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 17:51:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 17:51:42,241 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-17 17:51:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,242 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 17:51:42,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 17:51:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:51:42,243 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,243 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-17 17:51:42,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551579547] [2020-04-17 17:51:42,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,292 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 17:51:42,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551579547] [2020-04-17 17:51:42,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:51:42,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210687700] [2020-04-17 17:51:42,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:51:42,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:51:42,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:51:42,295 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 17:51:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,301 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-17 17:51:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:51:42,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 17:51:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,304 INFO L225 Difference]: With dead ends: 144 [2020-04-17 17:51:42,304 INFO L226 Difference]: Without dead ends: 144 [2020-04-17 17:51:42,304 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 17:51:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-17 17:51:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-17 17:51:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-17 17:51:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-17 17:51:42,316 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-17 17:51:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,316 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-17 17:51:42,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:51:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-17 17:51:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:51:42,318 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,318 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,318 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-17 17:51:42,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873839949] [2020-04-17 17:51:42,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,449 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 17:51:42,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873839949] [2020-04-17 17:51:42,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:42,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123098474] [2020-04-17 17:51:42,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:42,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:42,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:42,452 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-17 17:51:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,503 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-17 17:51:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:42,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:51:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,507 INFO L225 Difference]: With dead ends: 164 [2020-04-17 17:51:42,507 INFO L226 Difference]: Without dead ends: 124 [2020-04-17 17:51:42,508 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 17:51:42,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-17 17:51:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-17 17:51:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-17 17:51:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-17 17:51:42,524 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-17 17:51:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,525 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-17 17:51:42,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-17 17:51:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:51:42,526 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,526 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,526 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-17 17:51:42,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596753811] [2020-04-17 17:51:42,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,645 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 17:51:42,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596753811] [2020-04-17 17:51:42,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:51:42,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412761070] [2020-04-17 17:51:42,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:51:42,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:51:42,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:42,648 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-17 17:51:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,700 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-17 17:51:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:51:42,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:51:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,701 INFO L225 Difference]: With dead ends: 122 [2020-04-17 17:51:42,702 INFO L226 Difference]: Without dead ends: 97 [2020-04-17 17:51:42,702 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 17:51:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-17 17:51:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-17 17:51:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-17 17:51:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-17 17:51:42,714 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-17 17:51:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,714 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-17 17:51:42,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:51:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-17 17:51:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:51:42,716 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,716 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,716 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-17 17:51:42,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108381272] [2020-04-17 17:51:42,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,759 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 17:51:42,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108381272] [2020-04-17 17:51:42,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:42,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050062692] [2020-04-17 17:51:42,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:51:42,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:51:42,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:51:42,761 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-17 17:51:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,773 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-17 17:51:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:51:42,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 17:51:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,775 INFO L225 Difference]: With dead ends: 115 [2020-04-17 17:51:42,775 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 17:51:42,775 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 17:51:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 17:51:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-17 17:51:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-17 17:51:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-17 17:51:42,781 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-17 17:51:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,781 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-17 17:51:42,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:51:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-17 17:51:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:51:42,783 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,783 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,783 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,784 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-17 17:51:42,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474325825] [2020-04-17 17:51:42,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,858 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 17:51:42,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474325825] [2020-04-17 17:51:42,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:51:42,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120431788] [2020-04-17 17:51:42,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:42,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:42,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:42,860 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-17 17:51:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:42,887 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-17 17:51:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:51:42,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 17:51:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:42,891 INFO L225 Difference]: With dead ends: 114 [2020-04-17 17:51:42,891 INFO L226 Difference]: Without dead ends: 76 [2020-04-17 17:51:42,892 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 17:51:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-17 17:51:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-17 17:51:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-17 17:51:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-17 17:51:42,896 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-17 17:51:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:42,897 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-17 17:51:42,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-17 17:51:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:51:42,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:42,898 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:42,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-17 17:51:42,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:42,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768229465] [2020-04-17 17:51:42,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:42,980 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 17:51:42,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768229465] [2020-04-17 17:51:42,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:42,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:51:42,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41034021] [2020-04-17 17:51:42,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:51:42,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:42,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:51:42,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:51:42,983 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-17 17:51:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:43,015 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-17 17:51:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:51:43,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 17:51:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:43,016 INFO L225 Difference]: With dead ends: 70 [2020-04-17 17:51:43,016 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:51:43,016 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 17:51:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:51:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:51:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:51:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:51:43,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-17 17:51:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:43,018 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:51:43,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:51:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:51:43,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:51:43,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:51:43 BasicIcfg [2020-04-17 17:51:43,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:51:43,025 INFO L168 Benchmark]: Toolchain (without parser) took 4987.24 ms. Allocated memory was 141.0 MB in the beginning and 247.5 MB in the end (delta: 106.4 MB). Free memory was 102.5 MB in the beginning and 156.1 MB in the end (delta: -53.6 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,025 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.91 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 161.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.44 ms. Allocated memory is still 203.9 MB. Free memory was 160.5 MB in the beginning and 158.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,029 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 157.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,030 INFO L168 Benchmark]: RCFGBuilder took 443.52 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 135.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,031 INFO L168 Benchmark]: TraceAbstraction took 3665.64 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 135.1 MB in the beginning and 156.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:43,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.91 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 161.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.44 ms. Allocated memory is still 203.9 MB. Free memory was 160.5 MB in the beginning and 158.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 157.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.52 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 135.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3665.64 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 135.1 MB in the beginning and 156.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 676 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...