/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/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:25:08,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:25:08,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:25:08,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:25:08,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:25:08,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:25:08,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:25:08,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:25:09,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:25:09,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:25:09,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:25:09,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:25:09,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:25:09,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:25:09,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:25:09,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:25:09,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:25:09,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:25:09,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:25:09,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:25:09,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:25:09,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:25:09,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:25:09,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:25:09,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 15:25:09,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:25:09,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:25:09,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:25:09,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:25:09,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:25:09,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:25:09,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:25:09,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:25:09,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:25:09,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:25:09,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:25:09,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:25:09,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:25:09,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:25:09,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:25:09,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:25:09,118 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:25:09,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:25:09,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:25:09,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:25:09,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:25:09,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:25:09,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:25:09,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:25:09,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:25:09,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:25:09,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:25:09,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:25:09,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:25:09,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:25:09,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:25:09,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:25:09,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:25:09,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:25:09,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:25:09,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:25:09,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:25:09,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:25:09,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:25:09,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:25:09,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:25:09,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:25:09,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:25:09,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:25:09,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:25:09,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:25:09,597 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:25:09,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-11 15:25:09,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54542e3b3/0d382006a5eb48fe99b5f79652c23541/FLAGcd6af761e [2020-09-11 15:25:10,257 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:25:10,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-11 15:25:10,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54542e3b3/0d382006a5eb48fe99b5f79652c23541/FLAGcd6af761e [2020-09-11 15:25:10,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54542e3b3/0d382006a5eb48fe99b5f79652c23541 [2020-09-11 15:25:10,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:25:10,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:25:10,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:25:10,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:25:10,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:25:10,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:25:10" (1/1) ... [2020-09-11 15:25:10,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2474d477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:10, skipping insertion in model container [2020-09-11 15:25:10,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:25:10" (1/1) ... [2020-09-11 15:25:10,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:25:10,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:25:11,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:25:11,141 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:25:11,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:25:11,295 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:25:11,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11 WrapperNode [2020-09-11 15:25:11,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:25:11,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:25:11,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:25:11,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:25:11,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:25:11,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:25:11,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:25:11,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:25:11,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... [2020-09-11 15:25:11,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:25:11,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:25:11,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:25:11,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:25:11,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:25:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:25:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:25:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:25:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:25:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:25:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:25:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:25:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 15:25:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 15:25:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:25:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:25:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:25:11,474 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:25:11,842 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:25:11,843 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:25:11,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:25:11 BoogieIcfgContainer [2020-09-11 15:25:11,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:25:11,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:25:11,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:25:11,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:25:11,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:25:10" (1/3) ... [2020-09-11 15:25:11,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9412873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:25:11, skipping insertion in model container [2020-09-11 15:25:11,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:11" (2/3) ... [2020-09-11 15:25:11,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9412873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:25:11, skipping insertion in model container [2020-09-11 15:25:11,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:25:11" (3/3) ... [2020-09-11 15:25:11,869 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-09-11 15:25:11,888 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:25:11,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:25:11,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:25:11,900 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:25:11,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,960 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,963 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,965 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,965 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,967 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,967 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,968 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,968 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,977 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,978 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,978 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,978 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,988 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,988 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,995 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,995 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,996 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:11,996 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:12,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:12,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:12,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:12,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:12,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 15:25:12,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:25:12,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:25:12,063 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:25:12,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:25:12,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:25:12,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:25:12,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:25:12,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:25:12,084 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-11 15:25:12,086 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 15:25:12,158 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 15:25:12,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:25:12,164 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:25:12,168 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 15:25:12,192 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 15:25:12,192 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:25:12,193 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:25:12,196 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-11 15:25:12,197 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:25:13,951 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-11 15:25:13,951 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 15:25:13,956 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-11 15:25:14,017 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-11 15:25:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-11 15:25:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:25:14,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:14,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:14,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:14,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-11 15:25:14,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:14,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216014368] [2020-09-11 15:25:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:14,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216014368] [2020-09-11 15:25:14,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:14,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:14,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571395703] [2020-09-11 15:25:14,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:25:14,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:14,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:25:14,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:25:14,298 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-11 15:25:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:14,351 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-11 15:25:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:25:14,353 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-11 15:25:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:14,384 INFO L225 Difference]: With dead ends: 850 [2020-09-11 15:25:14,384 INFO L226 Difference]: Without dead ends: 706 [2020-09-11 15:25:14,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:25:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-11 15:25:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-11 15:25:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-11 15:25:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-11 15:25:14,509 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-11 15:25:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:14,511 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-11 15:25:14,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:25:14,511 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-11 15:25:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:25:14,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:14,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:14,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:25:14,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-11 15:25:14,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:14,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011184831] [2020-09-11 15:25:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:14,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011184831] [2020-09-11 15:25:14,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:14,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:14,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729245051] [2020-09-11 15:25:14,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:14,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:14,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:14,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:14,729 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-11 15:25:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:14,806 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-11 15:25:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:14,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:25:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:14,817 INFO L225 Difference]: With dead ends: 802 [2020-09-11 15:25:14,817 INFO L226 Difference]: Without dead ends: 658 [2020-09-11 15:25:14,818 INFO L675 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 [2020-09-11 15:25:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-11 15:25:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-11 15:25:14,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-11 15:25:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-11 15:25:14,863 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-11 15:25:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:14,863 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-11 15:25:14,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-11 15:25:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:25:14,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:14,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:14,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:25:14,873 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:14,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-09-11 15:25:14,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:14,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737652138] [2020-09-11 15:25:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:14,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737652138] [2020-09-11 15:25:14,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:14,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:14,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169953736] [2020-09-11 15:25:14,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:14,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:14,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:14,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:14,996 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-11 15:25:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:15,026 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-09-11 15:25:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:15,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:25:15,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:15,032 INFO L225 Difference]: With dead ends: 718 [2020-09-11 15:25:15,032 INFO L226 Difference]: Without dead ends: 598 [2020-09-11 15:25:15,033 INFO L675 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 [2020-09-11 15:25:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-11 15:25:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-11 15:25:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-11 15:25:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-09-11 15:25:15,056 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-09-11 15:25:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:15,057 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-09-11 15:25:15,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-09-11 15:25:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:25:15,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:15,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:15,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:25:15,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:15,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-09-11 15:25:15,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:15,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352898451] [2020-09-11 15:25:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:15,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352898451] [2020-09-11 15:25:15,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:15,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:15,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782593732] [2020-09-11 15:25:15,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:15,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:15,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:15,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:15,134 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-09-11 15:25:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:15,171 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-09-11 15:25:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:15,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:25:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:15,177 INFO L225 Difference]: With dead ends: 668 [2020-09-11 15:25:15,178 INFO L226 Difference]: Without dead ends: 578 [2020-09-11 15:25:15,179 INFO L675 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 [2020-09-11 15:25:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-11 15:25:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-09-11 15:25:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-11 15:25:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-09-11 15:25:15,205 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-09-11 15:25:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:15,205 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-09-11 15:25:15,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-09-11 15:25:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:25:15,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:15,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:15,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:25:15,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-09-11 15:25:15,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:15,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820327188] [2020-09-11 15:25:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:15,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820327188] [2020-09-11 15:25:15,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:15,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:15,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248970939] [2020-09-11 15:25:15,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:15,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:15,342 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-09-11 15:25:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:15,384 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-09-11 15:25:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:15,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:25:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:15,390 INFO L225 Difference]: With dead ends: 814 [2020-09-11 15:25:15,390 INFO L226 Difference]: Without dead ends: 618 [2020-09-11 15:25:15,391 INFO L675 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 [2020-09-11 15:25:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-11 15:25:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-09-11 15:25:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-11 15:25:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-09-11 15:25:15,411 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-09-11 15:25:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:15,412 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-09-11 15:25:15,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-09-11 15:25:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:25:15,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:15,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:15,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:25:15,414 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:15,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-09-11 15:25:15,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:15,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136236474] [2020-09-11 15:25:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:15,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136236474] [2020-09-11 15:25:15,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:15,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:15,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699663936] [2020-09-11 15:25:15,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:15,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:15,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:15,524 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-09-11 15:25:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:15,581 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-09-11 15:25:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:15,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 15:25:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:15,586 INFO L225 Difference]: With dead ends: 838 [2020-09-11 15:25:15,586 INFO L226 Difference]: Without dead ends: 490 [2020-09-11 15:25:15,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-11 15:25:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-09-11 15:25:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-11 15:25:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-09-11 15:25:15,603 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-09-11 15:25:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:15,603 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-09-11 15:25:15,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-09-11 15:25:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:25:15,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:15,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:15,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:25:15,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-09-11 15:25:15,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:15,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413377523] [2020-09-11 15:25:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:15,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413377523] [2020-09-11 15:25:15,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:15,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:15,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358787608] [2020-09-11 15:25:15,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:15,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:15,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:15,712 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-09-11 15:25:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:15,740 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-09-11 15:25:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:15,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:25:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:15,747 INFO L225 Difference]: With dead ends: 514 [2020-09-11 15:25:15,747 INFO L226 Difference]: Without dead ends: 466 [2020-09-11 15:25:15,749 INFO L675 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 [2020-09-11 15:25:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-11 15:25:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-09-11 15:25:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-09-11 15:25:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-09-11 15:25:15,768 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-09-11 15:25:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:15,768 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-09-11 15:25:15,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-09-11 15:25:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:15,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:15,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:15,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:25:15,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-09-11 15:25:15,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:15,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406687277] [2020-09-11 15:25:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:15,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406687277] [2020-09-11 15:25:15,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:15,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:15,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125064318] [2020-09-11 15:25:15,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:15,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:15,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:15,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:15,888 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 5 states. [2020-09-11 15:25:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:15,931 INFO L93 Difference]: Finished difference Result 678 states and 2040 transitions. [2020-09-11 15:25:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:15,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:25:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:15,939 INFO L225 Difference]: With dead ends: 678 [2020-09-11 15:25:15,939 INFO L226 Difference]: Without dead ends: 342 [2020-09-11 15:25:15,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-11 15:25:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-09-11 15:25:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-09-11 15:25:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1003 transitions. [2020-09-11 15:25:15,960 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1003 transitions. Word has length 15 [2020-09-11 15:25:15,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:15,960 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 1003 transitions. [2020-09-11 15:25:15,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1003 transitions. [2020-09-11 15:25:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:15,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:15,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:15,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:25:15,962 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash 733648448, now seen corresponding path program 2 times [2020-09-11 15:25:15,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:15,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927744146] [2020-09-11 15:25:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:16,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927744146] [2020-09-11 15:25:16,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:16,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:16,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243113680] [2020-09-11 15:25:16,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:16,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:16,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:16,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:16,047 INFO L87 Difference]: Start difference. First operand 342 states and 1003 transitions. Second operand 4 states. [2020-09-11 15:25:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:16,079 INFO L93 Difference]: Finished difference Result 458 states and 1279 transitions. [2020-09-11 15:25:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:16,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 15:25:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:16,083 INFO L225 Difference]: With dead ends: 458 [2020-09-11 15:25:16,083 INFO L226 Difference]: Without dead ends: 302 [2020-09-11 15:25:16,083 INFO L675 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 [2020-09-11 15:25:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-11 15:25:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 254. [2020-09-11 15:25:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-11 15:25:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-09-11 15:25:16,093 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-09-11 15:25:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:16,094 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-09-11 15:25:16,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-09-11 15:25:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:16,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:16,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:16,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:25:16,095 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-09-11 15:25:16,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:16,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220403467] [2020-09-11 15:25:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:16,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220403467] [2020-09-11 15:25:16,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:16,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:16,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380208520] [2020-09-11 15:25:16,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:16,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:16,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:16,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:16,189 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-09-11 15:25:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:16,229 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-09-11 15:25:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:16,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 15:25:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:16,232 INFO L225 Difference]: With dead ends: 302 [2020-09-11 15:25:16,232 INFO L226 Difference]: Without dead ends: 229 [2020-09-11 15:25:16,232 INFO L675 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 [2020-09-11 15:25:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-11 15:25:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-09-11 15:25:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-11 15:25:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-09-11 15:25:16,239 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-09-11 15:25:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:16,241 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-09-11 15:25:16,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-09-11 15:25:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:25:16,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:16,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:16,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:25:16,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-09-11 15:25:16,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:16,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327252037] [2020-09-11 15:25:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:16,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327252037] [2020-09-11 15:25:16,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:16,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:25:16,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083750341] [2020-09-11 15:25:16,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:16,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:16,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:16,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:16,336 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-09-11 15:25:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:16,387 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-09-11 15:25:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:25:16,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-11 15:25:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:16,389 INFO L225 Difference]: With dead ends: 227 [2020-09-11 15:25:16,389 INFO L226 Difference]: Without dead ends: 171 [2020-09-11 15:25:16,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:25:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-11 15:25:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-11 15:25:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-11 15:25:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-09-11 15:25:16,395 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-09-11 15:25:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:16,395 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-09-11 15:25:16,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-09-11 15:25:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:25:16,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:16,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:16,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 15:25:16,397 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:16,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-11 15:25:16,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:16,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295367321] [2020-09-11 15:25:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:16,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295367321] [2020-09-11 15:25:16,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:16,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:25:16,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556350207] [2020-09-11 15:25:16,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:25:16,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:16,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:25:16,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:25:16,489 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-09-11 15:25:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:16,546 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-09-11 15:25:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:25:16,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-11 15:25:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:16,547 INFO L225 Difference]: With dead ends: 147 [2020-09-11 15:25:16,548 INFO L226 Difference]: Without dead ends: 107 [2020-09-11 15:25:16,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-11 15:25:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-11 15:25:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-11 15:25:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-09-11 15:25:16,551 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-09-11 15:25:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:16,552 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-09-11 15:25:16,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:25:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-09-11 15:25:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:25:16,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:16,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:16,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 15:25:16,553 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-11 15:25:16,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:16,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818793370] [2020-09-11 15:25:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:16,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818793370] [2020-09-11 15:25:16,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:16,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:25:16,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399122527] [2020-09-11 15:25:16,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:16,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:16,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:16,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:16,620 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-09-11 15:25:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:16,653 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-09-11 15:25:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:25:16,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-11 15:25:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:16,654 INFO L225 Difference]: With dead ends: 121 [2020-09-11 15:25:16,654 INFO L226 Difference]: Without dead ends: 105 [2020-09-11 15:25:16,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-11 15:25:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-11 15:25:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-11 15:25:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-09-11 15:25:16,658 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-09-11 15:25:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:16,659 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-09-11 15:25:16,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-09-11 15:25:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:25:16,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:16,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:16,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 15:25:16,661 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:16,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-11 15:25:16,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:16,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462569475] [2020-09-11 15:25:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:16,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462569475] [2020-09-11 15:25:16,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:16,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-11 15:25:16,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884107521] [2020-09-11 15:25:16,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:25:16,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:25:16,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:16,762 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-09-11 15:25:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:16,810 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-09-11 15:25:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:25:16,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 15:25:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:16,811 INFO L225 Difference]: With dead ends: 93 [2020-09-11 15:25:16,811 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:25:16,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:25:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:25:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:25:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:25:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:25:16,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-11 15:25:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:16,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:25:16,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:25:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:25:16,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:25:16,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-11 15:25:16,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:25:16 BasicIcfg [2020-09-11 15:25:16,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:25:16,822 INFO L168 Benchmark]: Toolchain (without parser) took 6293.94 ms. Allocated memory was 138.4 MB in the beginning and 295.2 MB in the end (delta: 156.8 MB). Free memory was 100.6 MB in the beginning and 145.3 MB in the end (delta: -44.7 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:16,822 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:25:16,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 157.9 MB in the end (delta: -58.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:16,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.63 ms. Allocated memory is still 200.8 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:16,825 INFO L168 Benchmark]: Boogie Preprocessor took 29.07 ms. Allocated memory is still 200.8 MB. Free memory was 155.9 MB in the beginning and 154.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:16,826 INFO L168 Benchmark]: RCFGBuilder took 451.93 ms. Allocated memory is still 200.8 MB. Free memory was 154.5 MB in the beginning and 130.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:16,826 INFO L168 Benchmark]: TraceAbstraction took 4969.24 ms. Allocated memory was 200.8 MB in the beginning and 295.2 MB in the end (delta: 94.4 MB). Free memory was 129.7 MB in the beginning and 145.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:16,830 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 157.9 MB in the end (delta: -58.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.63 ms. Allocated memory is still 200.8 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.07 ms. Allocated memory is still 200.8 MB. Free memory was 155.9 MB in the beginning and 154.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.93 ms. Allocated memory is still 200.8 MB. Free memory was 154.5 MB in the beginning and 130.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4969.24 ms. Allocated memory was 200.8 MB in the beginning and 295.2 MB in the end (delta: 94.4 MB). Free memory was 129.7 MB in the beginning and 145.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 371 SDtfs, 335 SDslu, 597 SDs, 0 SdLazy, 227 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 7946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...