/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 0.1.25-60655ea [2020-09-14 22:47:02,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:47:02,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:47:02,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:47:02,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:47:02,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:47:02,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:47:02,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:47:02,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:47:02,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:47:02,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:47:02,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:47:02,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:47:02,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:47:02,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:47:02,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:47:02,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:47:02,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:47:02,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:47:02,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:47:02,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:47:02,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:47:02,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:47:02,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:47:02,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:47:02,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:47:02,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:47:02,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:47:02,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:47:02,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:47:02,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:47:02,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:47:02,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:47:02,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:47:02,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:47:02,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:47:02,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:47:02,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:47:02,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:47:02,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:47:02,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:47:02,695 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 [2020-09-14 22:47:02,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:47:02,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:47:02,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:47:02,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:47:02,725 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:47:02,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:47:02,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:47:02,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:47:02,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:47:02,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:47:02,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:47:02,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:47:02,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:47:02,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:47:02,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:47:02,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:47:02,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:47:02,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:47:02,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:47:02,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:47:02,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:47:02,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:47:02,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:47:02,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:47:02,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:47:02,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:47:02,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:47:02,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:47:02,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:47:02,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:47:03,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:47:03,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:47:03,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:47:03,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:47:03,239 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:47:03,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-14 22:47:03,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597f9a43b/6f98a857354a42ae94206df6e330510b/FLAG82328d931 [2020-09-14 22:47:03,972 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:47:03,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-14 22:47:03,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597f9a43b/6f98a857354a42ae94206df6e330510b/FLAG82328d931 [2020-09-14 22:47:04,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597f9a43b/6f98a857354a42ae94206df6e330510b [2020-09-14 22:47:04,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:47:04,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:47:04,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:47:04,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:47:04,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:47:04,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:47:04" (1/1) ... [2020-09-14 22:47:04,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f4cdb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:04, skipping insertion in model container [2020-09-14 22:47:04,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:47:04" (1/1) ... [2020-09-14 22:47:04,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:47:04,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:47:04,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:47:04,929 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:47:04,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:47:05,057 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:47:05,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05 WrapperNode [2020-09-14 22:47:05,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:47:05,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:47:05,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:47:05,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:47:05,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:47:05,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:47:05,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:47:05,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:47:05,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (1/1) ... [2020-09-14 22:47:05,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:47:05,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:47:05,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:47:05,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:47:05,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (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 [2020-09-14 22:47:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:47:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:47:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:47:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:47:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:47:05,249 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:47:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:47:05,249 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:47:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:47:05,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:47:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-14 22:47:05,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-14 22:47:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:47:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:47:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:47:05,254 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:47:05,714 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:47:05,715 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:47:05,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:47:05 BoogieIcfgContainer [2020-09-14 22:47:05,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:47:05,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:47:05,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:47:05,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:47:05,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:47:04" (1/3) ... [2020-09-14 22:47:05,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6381c11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:47:05, skipping insertion in model container [2020-09-14 22:47:05,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:05" (2/3) ... [2020-09-14 22:47:05,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6381c11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:47:05, skipping insertion in model container [2020-09-14 22:47:05,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:47:05" (3/3) ... [2020-09-14 22:47:05,730 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-09-14 22:47:05,742 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:47:05,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:47:05,753 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:47:05,755 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:47:05,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,789 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,789 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,789 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,792 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,793 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,793 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,794 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,795 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,795 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,795 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,796 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,796 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,800 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,801 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,801 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,801 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,814 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,814 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,815 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,815 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:05,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-14 22:47:05,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:47:05,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:47:05,869 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:47:05,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:47:05,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:47:05,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:47:05,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:47:05,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:47:05,888 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-14 22:47:05,891 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-14 22:47:05,944 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-14 22:47:05,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:47:05,951 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. [2020-09-14 22:47:05,954 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-14 22:47:05,980 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-14 22:47:05,980 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:47:05,981 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. [2020-09-14 22:47:05,984 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-14 22:47:05,985 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:47:07,807 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-14 22:47:07,807 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-14 22:47:07,813 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-14 22:47:07,893 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-14 22:47:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-14 22:47:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:47:07,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:07,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:07,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-14 22:47:07,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:07,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276371006] [2020-09-14 22:47:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:08,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276371006] [2020-09-14 22:47:08,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:08,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:08,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867331499] [2020-09-14 22:47:08,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-14 22:47:08,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:08,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-14 22:47:08,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 22:47:08,214 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-14 22:47:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:08,263 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-14 22:47:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-14 22:47:08,265 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-14 22:47:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:08,297 INFO L225 Difference]: With dead ends: 850 [2020-09-14 22:47:08,297 INFO L226 Difference]: Without dead ends: 706 [2020-09-14 22:47:08,299 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 [2020-09-14 22:47:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-14 22:47:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-14 22:47:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-14 22:47:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-14 22:47:08,436 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-14 22:47:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:08,437 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-14 22:47:08,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-14 22:47:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-14 22:47:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:47:08,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:08,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:08,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:47:08,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:08,442 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-14 22:47:08,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:08,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789847844] [2020-09-14 22:47:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:08,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789847844] [2020-09-14 22:47:08,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:08,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:08,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667383664] [2020-09-14 22:47:08,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:08,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:08,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:08,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:08,619 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-14 22:47:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:08,691 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-14 22:47:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:08,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:47:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:08,698 INFO L225 Difference]: With dead ends: 802 [2020-09-14 22:47:08,698 INFO L226 Difference]: Without dead ends: 658 [2020-09-14 22:47:08,699 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 [2020-09-14 22:47:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-14 22:47:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-14 22:47:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-14 22:47:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-14 22:47:08,728 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-14 22:47:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:08,728 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-14 22:47:08,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-14 22:47:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:47:08,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:08,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:08,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:47:08,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-09-14 22:47:08,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:08,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468433985] [2020-09-14 22:47:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:08,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468433985] [2020-09-14 22:47:08,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:08,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:08,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500022980] [2020-09-14 22:47:08,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:08,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:08,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:08,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:08,869 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-14 22:47:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:08,898 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-09-14 22:47:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:08,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 22:47:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:08,903 INFO L225 Difference]: With dead ends: 718 [2020-09-14 22:47:08,903 INFO L226 Difference]: Without dead ends: 598 [2020-09-14 22:47:08,904 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 [2020-09-14 22:47:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-14 22:47:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-14 22:47:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-14 22:47:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-09-14 22:47:08,926 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-09-14 22:47:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:08,926 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-09-14 22:47:08,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-09-14 22:47:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:47:08,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:08,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:08,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:47:08,929 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:08,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-09-14 22:47:08,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:08,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252103109] [2020-09-14 22:47:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252103109] [2020-09-14 22:47:09,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:09,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190660576] [2020-09-14 22:47:09,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:09,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:09,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:09,031 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-09-14 22:47:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,086 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-09-14 22:47:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 22:47:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,092 INFO L225 Difference]: With dead ends: 668 [2020-09-14 22:47:09,092 INFO L226 Difference]: Without dead ends: 578 [2020-09-14 22:47:09,093 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 [2020-09-14 22:47:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-14 22:47:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-09-14 22:47:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-14 22:47:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-09-14 22:47:09,115 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-09-14 22:47:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,116 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-09-14 22:47:09,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-09-14 22:47:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:47:09,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:47:09,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-09-14 22:47:09,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20586989] [2020-09-14 22:47:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20586989] [2020-09-14 22:47:09,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:09,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929162761] [2020-09-14 22:47:09,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:09,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:09,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:09,214 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-09-14 22:47:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,264 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-09-14 22:47:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:47:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,271 INFO L225 Difference]: With dead ends: 814 [2020-09-14 22:47:09,272 INFO L226 Difference]: Without dead ends: 618 [2020-09-14 22:47:09,272 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 [2020-09-14 22:47:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-14 22:47:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-09-14 22:47:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-14 22:47:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-09-14 22:47:09,292 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-09-14 22:47:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,293 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-09-14 22:47:09,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-09-14 22:47:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:47:09,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:47:09,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-09-14 22:47:09,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711742736] [2020-09-14 22:47:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711742736] [2020-09-14 22:47:09,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:09,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120572938] [2020-09-14 22:47:09,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:09,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:09,393 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-09-14 22:47:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,441 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-09-14 22:47:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-14 22:47:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,446 INFO L225 Difference]: With dead ends: 838 [2020-09-14 22:47:09,446 INFO L226 Difference]: Without dead ends: 490 [2020-09-14 22:47:09,447 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 [2020-09-14 22:47:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-14 22:47:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-09-14 22:47:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-14 22:47:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-09-14 22:47:09,464 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-09-14 22:47:09,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,464 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-09-14 22:47:09,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-09-14 22:47:09,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:47:09,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:47:09,467 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,467 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-09-14 22:47:09,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575930914] [2020-09-14 22:47:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575930914] [2020-09-14 22:47:09,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:09,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782736570] [2020-09-14 22:47:09,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:09,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:09,536 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-09-14 22:47:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,562 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-09-14 22:47:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:47:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,567 INFO L225 Difference]: With dead ends: 514 [2020-09-14 22:47:09,567 INFO L226 Difference]: Without dead ends: 466 [2020-09-14 22:47:09,567 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 [2020-09-14 22:47:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-14 22:47:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-09-14 22:47:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-09-14 22:47:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-09-14 22:47:09,585 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-09-14 22:47:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,585 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-09-14 22:47:09,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-09-14 22:47:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:09,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:47:09,588 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-09-14 22:47:09,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650844453] [2020-09-14 22:47:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650844453] [2020-09-14 22:47:09,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:09,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127544476] [2020-09-14 22:47:09,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:09,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:09,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:09,688 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 5 states. [2020-09-14 22:47:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,735 INFO L93 Difference]: Finished difference Result 678 states and 2040 transitions. [2020-09-14 22:47:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 22:47:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,739 INFO L225 Difference]: With dead ends: 678 [2020-09-14 22:47:09,739 INFO L226 Difference]: Without dead ends: 342 [2020-09-14 22:47:09,740 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 [2020-09-14 22:47:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-14 22:47:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-09-14 22:47:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-09-14 22:47:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1003 transitions. [2020-09-14 22:47:09,752 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1003 transitions. Word has length 15 [2020-09-14 22:47:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,752 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 1003 transitions. [2020-09-14 22:47:09,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1003 transitions. [2020-09-14 22:47:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:09,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:47:09,754 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash 733648448, now seen corresponding path program 2 times [2020-09-14 22:47:09,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389281065] [2020-09-14 22:47:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389281065] [2020-09-14 22:47:09,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:09,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127616493] [2020-09-14 22:47:09,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:09,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:09,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:09,812 INFO L87 Difference]: Start difference. First operand 342 states and 1003 transitions. Second operand 4 states. [2020-09-14 22:47:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,847 INFO L93 Difference]: Finished difference Result 458 states and 1279 transitions. [2020-09-14 22:47:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-14 22:47:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,850 INFO L225 Difference]: With dead ends: 458 [2020-09-14 22:47:09,850 INFO L226 Difference]: Without dead ends: 302 [2020-09-14 22:47:09,850 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 [2020-09-14 22:47:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-14 22:47:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 254. [2020-09-14 22:47:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-14 22:47:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-09-14 22:47:09,860 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-09-14 22:47:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,860 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-09-14 22:47:09,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-09-14 22:47:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:09,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:47:09,862 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-09-14 22:47:09,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799052494] [2020-09-14 22:47:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:09,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799052494] [2020-09-14 22:47:09,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:09,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:09,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383973450] [2020-09-14 22:47:09,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:09,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:09,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:09,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:09,943 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-09-14 22:47:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:09,983 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-09-14 22:47:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:09,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-14 22:47:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:09,986 INFO L225 Difference]: With dead ends: 302 [2020-09-14 22:47:09,986 INFO L226 Difference]: Without dead ends: 229 [2020-09-14 22:47:09,986 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 [2020-09-14 22:47:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-14 22:47:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-09-14 22:47:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-14 22:47:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-09-14 22:47:09,994 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-09-14 22:47:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:09,994 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-09-14 22:47:09,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-09-14 22:47:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 22:47:09,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:09,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:09,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 22:47:09,996 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:09,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-09-14 22:47:09,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:09,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662854953] [2020-09-14 22:47:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:10,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662854953] [2020-09-14 22:47:10,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:10,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:47:10,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129765478] [2020-09-14 22:47:10,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:10,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:10,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:10,084 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-09-14 22:47:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:10,136 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-09-14 22:47:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:47:10,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-14 22:47:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:10,139 INFO L225 Difference]: With dead ends: 227 [2020-09-14 22:47:10,139 INFO L226 Difference]: Without dead ends: 171 [2020-09-14 22:47:10,139 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 [2020-09-14 22:47:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-14 22:47:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-14 22:47:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-14 22:47:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-09-14 22:47:10,145 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-09-14 22:47:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:10,145 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-09-14 22:47:10,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-09-14 22:47:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 22:47:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:10,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:10,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-14 22:47:10,147 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-14 22:47:10,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:10,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829404030] [2020-09-14 22:47:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:10,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829404030] [2020-09-14 22:47:10,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:10,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 22:47:10,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350884181] [2020-09-14 22:47:10,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:47:10,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:10,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:47:10,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:47:10,235 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-09-14 22:47:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:10,301 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-09-14 22:47:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:47:10,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-14 22:47:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:10,303 INFO L225 Difference]: With dead ends: 147 [2020-09-14 22:47:10,303 INFO L226 Difference]: Without dead ends: 107 [2020-09-14 22:47:10,303 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 [2020-09-14 22:47:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-14 22:47:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-14 22:47:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-14 22:47:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-09-14 22:47:10,307 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-09-14 22:47:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:10,308 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-09-14 22:47:10,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:47:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-09-14 22:47:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-14 22:47:10,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:10,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:10,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-14 22:47:10,309 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:10,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-14 22:47:10,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:10,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554326491] [2020-09-14 22:47:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:10,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554326491] [2020-09-14 22:47:10,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:10,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:47:10,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352055013] [2020-09-14 22:47:10,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:10,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:10,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:10,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:10,405 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-09-14 22:47:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:10,450 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-09-14 22:47:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:47:10,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-14 22:47:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:10,452 INFO L225 Difference]: With dead ends: 121 [2020-09-14 22:47:10,452 INFO L226 Difference]: Without dead ends: 105 [2020-09-14 22:47:10,453 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 [2020-09-14 22:47:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-14 22:47:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-14 22:47:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-14 22:47:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-09-14 22:47:10,458 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-09-14 22:47:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:10,458 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-09-14 22:47:10,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-09-14 22:47:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-14 22:47:10,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:10,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:10,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-14 22:47:10,460 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-14 22:47:10,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:10,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342599841] [2020-09-14 22:47:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:10,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342599841] [2020-09-14 22:47:10,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:10,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-14 22:47:10,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421595388] [2020-09-14 22:47:10,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-14 22:47:10,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:10,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-14 22:47:10,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:47:10,580 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-09-14 22:47:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:10,636 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-09-14 22:47:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:47:10,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-14 22:47:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:10,637 INFO L225 Difference]: With dead ends: 93 [2020-09-14 22:47:10,637 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:47:10,637 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 [2020-09-14 22:47:10,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:47:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:47:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:47:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:47:10,638 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-14 22:47:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:10,639 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:47:10,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-14 22:47:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:47:10,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:47:10,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-14 22:47:10,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:47:10 BasicIcfg [2020-09-14 22:47:10,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:47:10,649 INFO L168 Benchmark]: Toolchain (without parser) took 6410.32 ms. Allocated memory was 146.3 MB in the beginning and 284.7 MB in the end (delta: 138.4 MB). Free memory was 100.7 MB in the beginning and 112.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 126.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,650 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.71 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.1 MB in the beginning and 161.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.79 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 158.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,661 INFO L168 Benchmark]: Boogie Preprocessor took 33.26 ms. Allocated memory is still 205.0 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,664 INFO L168 Benchmark]: RCFGBuilder took 564.68 ms. Allocated memory is still 205.0 MB. Free memory was 157.5 MB in the beginning and 133.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,665 INFO L168 Benchmark]: TraceAbstraction took 4923.80 ms. Allocated memory was 205.0 MB in the beginning and 284.7 MB in the end (delta: 79.7 MB). Free memory was 133.0 MB in the beginning and 112.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:10,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.71 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.1 MB in the beginning and 161.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.79 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 158.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.26 ms. Allocated memory is still 205.0 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 564.68 ms. Allocated memory is still 205.0 MB. Free memory was 157.5 MB in the beginning and 133.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4923.80 ms. Allocated memory was 205.0 MB in the beginning and 284.7 MB in the end (delta: 79.7 MB). Free memory was 133.0 MB in the beginning and 112.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 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: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, 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, 0.4s 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: 0.2s 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...