/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:19:03,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:19:03,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:19:03,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:19:03,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:19:03,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:19:03,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:19:03,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:19:03,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:19:03,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:19:03,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:19:03,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:19:03,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:19:03,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:19:03,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:19:03,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:19:03,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:19:03,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:19:03,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:19:03,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:19:03,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:19:03,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:19:03,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:19:03,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:19:03,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:19:03,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:19:03,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:19:03,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:19:03,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:19:03,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:19:03,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:19:03,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:19:03,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:19:03,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:19:03,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:19:03,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:19:03,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:19:03,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:19:03,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:19:03,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:19:03,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:19:03,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:19:03,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:19:03,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:19:03,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:19:03,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:19:03,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:19:03,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:19:03,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:19:03,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:19:03,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:19:03,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:19:03,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:19:03,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:19:03,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:19:03,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:19:03,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:19:03,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:19:03,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:19:03,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:19:03,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:19:03,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:19:03,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:19:03,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:19:03,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:19:03,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:19:03,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:19:03,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:19:03,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:19:03,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:19:03,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:19:04,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:19:04,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:19:04,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:19:04,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:19:04,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:19:04,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-15 22:19:04,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d128820d/155d7976159444108deb5601b3d9dac5/FLAG11cd79ce0 [2020-10-15 22:19:04,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:19:04,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-15 22:19:04,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d128820d/155d7976159444108deb5601b3d9dac5/FLAG11cd79ce0 [2020-10-15 22:19:05,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d128820d/155d7976159444108deb5601b3d9dac5 [2020-10-15 22:19:05,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:19:05,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:19:05,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:19:05,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:19:05,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:19:05,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26597ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05, skipping insertion in model container [2020-10-15 22:19:05,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:19:05,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:19:05,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:19:05,653 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:19:05,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:19:05,779 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:19:05,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05 WrapperNode [2020-10-15 22:19:05,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:19:05,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:19:05,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:19:05,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:19:05,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:19:05,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:19:05,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:19:05,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:19:05,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... [2020-10-15 22:19:05,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:19:05,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:19:05,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:19:05,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:19:05,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:19:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:19:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:19:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-15 22:19:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-15 22:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:19:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:19:05,938 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:19:06,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:19:06,284 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:19:06,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:19:06 BoogieIcfgContainer [2020-10-15 22:19:06,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:19:06,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:19:06,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:19:06,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:19:06,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:19:05" (1/3) ... [2020-10-15 22:19:06,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4127bbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:19:06, skipping insertion in model container [2020-10-15 22:19:06,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:05" (2/3) ... [2020-10-15 22:19:06,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4127bbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:19:06, skipping insertion in model container [2020-10-15 22:19:06,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:19:06" (3/3) ... [2020-10-15 22:19:06,295 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-15 22:19:06,306 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:19:06,307 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:19:06,314 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:19:06,315 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:19:06,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,354 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,355 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,355 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,360 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,382 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,382 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,383 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,383 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:06,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 22:19:06,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:19:06,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:19:06,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:19:06,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:19:06,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:19:06,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:19:06,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:19:06,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:19:06,451 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:19:06,453 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-15 22:19:06,455 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-15 22:19:06,457 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-15 22:19:06,519 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-15 22:19:06,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:19:06,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-15 22:19:06,529 INFO L117 LiptonReduction]: Number of co-enabled transitions 2016 [2020-10-15 22:19:08,195 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-15 22:19:08,264 INFO L132 LiptonReduction]: Checked pairs total: 4737 [2020-10-15 22:19:08,264 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-15 22:19:08,271 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-15 22:19:08,366 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-15 22:19:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-15 22:19:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:19:08,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:08,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:08,384 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-15 22:19:08,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:08,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300026776] [2020-10-15 22:19:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:08,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300026776] [2020-10-15 22:19:08,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:08,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:08,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099522330] [2020-10-15 22:19:08,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:19:08,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:08,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:19:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:19:08,603 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-15 22:19:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:08,674 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-15 22:19:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:19:08,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 22:19:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:08,718 INFO L225 Difference]: With dead ends: 1450 [2020-10-15 22:19:08,719 INFO L226 Difference]: Without dead ends: 1194 [2020-10-15 22:19:08,721 INFO L677 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 [2020-10-15 22:19:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-15 22:19:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-15 22:19:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-15 22:19:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-15 22:19:08,878 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-15 22:19:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:08,879 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-15 22:19:08,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:19:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-15 22:19:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:19:08,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:08,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:08,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:19:08,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:08,884 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-15 22:19:08,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:08,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300302983] [2020-10-15 22:19:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:09,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300302983] [2020-10-15 22:19:09,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:09,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:09,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298648466] [2020-10-15 22:19:09,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:19:09,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:09,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:19:09,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:19:09,026 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-15 22:19:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:09,067 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-15 22:19:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:19:09,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:19:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:09,078 INFO L225 Difference]: With dead ends: 1322 [2020-10-15 22:19:09,078 INFO L226 Difference]: Without dead ends: 1066 [2020-10-15 22:19:09,079 INFO L677 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 [2020-10-15 22:19:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-15 22:19:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-15 22:19:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-15 22:19:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-15 22:19:09,119 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-15 22:19:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:09,120 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-15 22:19:09,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:19:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-15 22:19:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:19:09,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:09,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:09,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:19:09,123 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:09,124 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-10-15 22:19:09,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809424564] [2020-10-15 22:19:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:09,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809424564] [2020-10-15 22:19:09,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:09,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:09,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114954204] [2020-10-15 22:19:09,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:19:09,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:09,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:19:09,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:19:09,199 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-15 22:19:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:09,240 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-15 22:19:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:19:09,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:19:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:09,249 INFO L225 Difference]: With dead ends: 1162 [2020-10-15 22:19:09,249 INFO L226 Difference]: Without dead ends: 970 [2020-10-15 22:19:09,250 INFO L677 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 [2020-10-15 22:19:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-15 22:19:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-15 22:19:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-15 22:19:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-15 22:19:09,286 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-15 22:19:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:09,286 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-15 22:19:09,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:19:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-15 22:19:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:19:09,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:09,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:09,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:19:09,292 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-10-15 22:19:09,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:09,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344602070] [2020-10-15 22:19:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:09,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344602070] [2020-10-15 22:19:09,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:09,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:09,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804691384] [2020-10-15 22:19:09,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:19:09,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:09,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:19:09,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:19:09,380 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-10-15 22:19:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:09,407 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-10-15 22:19:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:19:09,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:19:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:09,415 INFO L225 Difference]: With dead ends: 1042 [2020-10-15 22:19:09,416 INFO L226 Difference]: Without dead ends: 898 [2020-10-15 22:19:09,416 INFO L677 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 [2020-10-15 22:19:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-15 22:19:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-10-15 22:19:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-15 22:19:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-10-15 22:19:09,448 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-10-15 22:19:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:09,449 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-10-15 22:19:09,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:19:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-10-15 22:19:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:19:09,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:09,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:09,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:19:09,451 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:09,452 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-10-15 22:19:09,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:09,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174381427] [2020-10-15 22:19:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:09,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174381427] [2020-10-15 22:19:09,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:09,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:09,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47472644] [2020-10-15 22:19:09,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:19:09,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:19:09,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:19:09,501 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-10-15 22:19:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:09,526 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-10-15 22:19:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:19:09,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:19:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:09,534 INFO L225 Difference]: With dead ends: 952 [2020-10-15 22:19:09,534 INFO L226 Difference]: Without dead ends: 844 [2020-10-15 22:19:09,535 INFO L677 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 [2020-10-15 22:19:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-15 22:19:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-10-15 22:19:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-15 22:19:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-10-15 22:19:09,569 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-10-15 22:19:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:09,569 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-10-15 22:19:09,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:19:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-10-15 22:19:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:19:09,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:09,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:09,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:19:09,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:09,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:09,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-10-15 22:19:09,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:09,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580592025] [2020-10-15 22:19:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:09,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580592025] [2020-10-15 22:19:09,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:09,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:19:09,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309173384] [2020-10-15 22:19:09,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:19:09,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:09,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:19:09,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:19:09,712 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-10-15 22:19:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:09,782 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-10-15 22:19:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:19:09,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:19:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:09,787 INFO L225 Difference]: With dead ends: 1063 [2020-10-15 22:19:09,787 INFO L226 Difference]: Without dead ends: 472 [2020-10-15 22:19:09,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:19:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-15 22:19:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-10-15 22:19:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-15 22:19:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-10-15 22:19:09,806 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-10-15 22:19:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:09,806 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-10-15 22:19:09,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:19:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-10-15 22:19:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:19:09,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:09,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:09,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:19:09,809 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:09,809 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-10-15 22:19:09,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:09,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745892796] [2020-10-15 22:19:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:09,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745892796] [2020-10-15 22:19:09,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:09,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:19:09,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577087394] [2020-10-15 22:19:09,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:19:09,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:09,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:19:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:19:09,890 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-10-15 22:19:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:09,936 INFO L93 Difference]: Finished difference Result 634 states and 1979 transitions. [2020-10-15 22:19:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:19:09,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 22:19:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:09,939 INFO L225 Difference]: With dead ends: 634 [2020-10-15 22:19:09,939 INFO L226 Difference]: Without dead ends: 292 [2020-10-15 22:19:09,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:19:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-15 22:19:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-10-15 22:19:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-15 22:19:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-10-15 22:19:09,951 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-10-15 22:19:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:09,951 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-10-15 22:19:09,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:19:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-10-15 22:19:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:19:09,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:09,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:09,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:19:09,953 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:09,953 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-10-15 22:19:09,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:09,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125093516] [2020-10-15 22:19:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:10,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125093516] [2020-10-15 22:19:10,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:10,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:19:10,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219127305] [2020-10-15 22:19:10,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:19:10,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:10,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:19:10,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:19:10,028 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-10-15 22:19:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:10,065 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-10-15 22:19:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:19:10,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 22:19:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:10,067 INFO L225 Difference]: With dead ends: 352 [2020-10-15 22:19:10,067 INFO L226 Difference]: Without dead ends: 154 [2020-10-15 22:19:10,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:19:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-15 22:19:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-15 22:19:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-15 22:19:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-15 22:19:10,073 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-15 22:19:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:10,073 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-15 22:19:10,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:19:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-15 22:19:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 22:19:10,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:10,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:10,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:19:10,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-10-15 22:19:10,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:10,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191010485] [2020-10-15 22:19:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:10,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191010485] [2020-10-15 22:19:10,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:10,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:19:10,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142051240] [2020-10-15 22:19:10,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:19:10,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:10,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:19:10,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:19:10,124 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-15 22:19:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:10,157 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-15 22:19:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:19:10,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-15 22:19:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:10,158 INFO L225 Difference]: With dead ends: 130 [2020-10-15 22:19:10,158 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:19:10,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:19:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:19:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:19:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:19:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:19:10,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-15 22:19:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:10,159 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:19:10,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:19:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:19:10,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:19:10,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:19:10,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:19:10 BasicIcfg [2020-10-15 22:19:10,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:19:10,165 INFO L168 Benchmark]: Toolchain (without parser) took 5121.73 ms. Allocated memory was 250.6 MB in the beginning and 427.8 MB in the end (delta: 177.2 MB). Free memory was 206.3 MB in the beginning and 307.4 MB in the end (delta: -101.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:10,166 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:19:10,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.58 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 206.3 MB in the beginning and 264.9 MB in the end (delta: -58.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:10,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.42 ms. Allocated memory is still 312.0 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:10,168 INFO L168 Benchmark]: Boogie Preprocessor took 28.37 ms. Allocated memory is still 312.0 MB. Free memory is still 262.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:19:10,169 INFO L168 Benchmark]: RCFGBuilder took 430.02 ms. Allocated memory is still 312.0 MB. Free memory was 262.4 MB in the beginning and 235.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:10,170 INFO L168 Benchmark]: TraceAbstraction took 3875.76 ms. Allocated memory was 312.0 MB in the beginning and 427.8 MB in the end (delta: 115.9 MB). Free memory was 235.5 MB in the beginning and 307.4 MB in the end (delta: -71.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:10,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 734.58 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 206.3 MB in the beginning and 264.9 MB in the end (delta: -58.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.42 ms. Allocated memory is still 312.0 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.37 ms. Allocated memory is still 312.0 MB. Free memory is still 262.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 430.02 ms. Allocated memory is still 312.0 MB. Free memory was 262.4 MB in the beginning and 235.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3875.76 ms. Allocated memory was 312.0 MB in the beginning and 427.8 MB in the end (delta: 115.9 MB). Free memory was 235.5 MB in the beginning and 307.4 MB in the end (delta: -71.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1437 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 97 PlacesBefore, 41 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 4737 MoverChecksTotal - 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, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 263 SDtfs, 279 SDslu, 353 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...