/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:21:59,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:21:59,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:21:59,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:21:59,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:21:59,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:21:59,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:21:59,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:21:59,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:21:59,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:21:59,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:21:59,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:21:59,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:21:59,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:21:59,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:21:59,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:21:59,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:21:59,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:21:59,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:21:59,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:21:59,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:21:59,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:21:59,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:21:59,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:21:59,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:21:59,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:21:59,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:21:59,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:21:59,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:21:59,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:21:59,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:21:59,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:21:59,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:21:59,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:21:59,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:21:59,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:21:59,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:21:59,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:21:59,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:21:59,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:21:59,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:21:59,155 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 [2020-10-16 11:21:59,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:21:59,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:21:59,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:21:59,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:21:59,202 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:21:59,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:21:59,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:21:59,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:21:59,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:21:59,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:21:59,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:21:59,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:21:59,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:21:59,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:21:59,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:21:59,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:21:59,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:21:59,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:21:59,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:21:59,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:21:59,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:21:59,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:21:59,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:21:59,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:21:59,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:21:59,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:21:59,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:21:59,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:21:59,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:21:59,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:21:59,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:21:59,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:21:59,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:21:59,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:21:59,512 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:21:59,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-16 11:21:59,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/895a6fcf5/6f6cf29e35664169b383e1da36ccf70a/FLAGa901c2481 [2020-10-16 11:22:00,108 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:22:00,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-16 11:22:00,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/895a6fcf5/6f6cf29e35664169b383e1da36ccf70a/FLAGa901c2481 [2020-10-16 11:22:00,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/895a6fcf5/6f6cf29e35664169b383e1da36ccf70a [2020-10-16 11:22:00,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:22:00,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:22:00,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:22:00,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:22:00,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:22:00,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:22:00" (1/1) ... [2020-10-16 11:22:00,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6ce511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:00, skipping insertion in model container [2020-10-16 11:22:00,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:22:00" (1/1) ... [2020-10-16 11:22:00,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:22:00,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:22:01,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:22:01,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:22:01,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:22:01,302 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:22:01,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01 WrapperNode [2020-10-16 11:22:01,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:22:01,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:22:01,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:22:01,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:22:01,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:22:01,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:22:01,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:22:01,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:22:01,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (1/1) ... [2020-10-16 11:22:01,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:22:01,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:22:01,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:22:01,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:22:01,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (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 [2020-10-16 11:22:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:22:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:22:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:22:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:22:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:22:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:22:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:22:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:22:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:22:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:22:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:22:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:22:01,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:22:01,457 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:22:01,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:22:01,815 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:22:01,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:22:01 BoogieIcfgContainer [2020-10-16 11:22:01,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:22:01,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:22:01,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:22:01,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:22:01,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:22:00" (1/3) ... [2020-10-16 11:22:01,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae9948c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:22:01, skipping insertion in model container [2020-10-16 11:22:01,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:01" (2/3) ... [2020-10-16 11:22:01,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae9948c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:22:01, skipping insertion in model container [2020-10-16 11:22:01,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:22:01" (3/3) ... [2020-10-16 11:22:01,829 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-10-16 11:22:01,838 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:22:01,839 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:22:01,846 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:22:01,846 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:22:01,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,881 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,881 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,885 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,885 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,885 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,885 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,887 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,887 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,887 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,887 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,888 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,888 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,892 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,900 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,900 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,900 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,904 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,904 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,905 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:01,910 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:22:01,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:22:01,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:22:01,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:22:01,951 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:22:01,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:22:01,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:22:01,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:22:01,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:22:01,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:22:01,967 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:22:01,970 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:22:01,974 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:22:01,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 11:22:02,025 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 11:22:02,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:22:02,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 11:22:02,036 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:22:03,406 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-16 11:22:03,706 INFO L132 LiptonReduction]: Checked pairs total: 2362 [2020-10-16 11:22:03,707 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 11:22:03,714 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 11:22:03,740 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:22:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:22:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:22:03,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:03,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:03,752 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:03,759 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-10-16 11:22:03,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:03,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464458890] [2020-10-16 11:22:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464458890] [2020-10-16 11:22:04,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:22:04,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062786556] [2020-10-16 11:22:04,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:22:04,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:22:04,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,040 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:22:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:04,086 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 11:22:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:22:04,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:22:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:04,105 INFO L225 Difference]: With dead ends: 290 [2020-10-16 11:22:04,105 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 11:22:04,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 11:22:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 11:22:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 11:22:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 11:22:04,181 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 11:22:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:04,183 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 11:22:04,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:22:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 11:22:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:22:04,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:04,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:04,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:22:04,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:04,185 INFO L82 PathProgramCache]: Analyzing trace with hash 824028903, now seen corresponding path program 1 times [2020-10-16 11:22:04,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:04,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762247045] [2020-10-16 11:22:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762247045] [2020-10-16 11:22:04,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:22:04,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524666607] [2020-10-16 11:22:04,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:22:04,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:22:04,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,312 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-16 11:22:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:04,331 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-10-16 11:22:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:22:04,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:22:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:04,335 INFO L225 Difference]: With dead ends: 220 [2020-10-16 11:22:04,336 INFO L226 Difference]: Without dead ends: 220 [2020-10-16 11:22:04,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-16 11:22:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-16 11:22:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-16 11:22:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-16 11:22:04,360 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-10-16 11:22:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:04,361 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-16 11:22:04,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:22:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-16 11:22:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:22:04,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:04,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:04,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:22:04,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-10-16 11:22:04,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:04,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917767500] [2020-10-16 11:22:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917767500] [2020-10-16 11:22:04,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:22:04,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107919001] [2020-10-16 11:22:04,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:22:04,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:22:04,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:22:04,435 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-10-16 11:22:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:04,474 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-10-16 11:22:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:22:04,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 11:22:04,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:04,477 INFO L225 Difference]: With dead ends: 240 [2020-10-16 11:22:04,477 INFO L226 Difference]: Without dead ends: 176 [2020-10-16 11:22:04,477 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 [2020-10-16 11:22:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-16 11:22:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-10-16 11:22:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 11:22:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-10-16 11:22:04,492 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-10-16 11:22:04,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:04,492 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-10-16 11:22:04,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:22:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-10-16 11:22:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:22:04,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:04,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:04,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:22:04,495 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:04,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:04,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-10-16 11:22:04,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:04,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689890423] [2020-10-16 11:22:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689890423] [2020-10-16 11:22:04,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:22:04,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281429536] [2020-10-16 11:22:04,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:22:04,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:22:04,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,574 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-10-16 11:22:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:04,585 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-10-16 11:22:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:22:04,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:22:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:04,587 INFO L225 Difference]: With dead ends: 225 [2020-10-16 11:22:04,587 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 11:22:04,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 11:22:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-10-16 11:22:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 11:22:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-10-16 11:22:04,600 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-10-16 11:22:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:04,600 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-10-16 11:22:04,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:22:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-10-16 11:22:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:22:04,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:04,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:04,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:22:04,603 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-10-16 11:22:04,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:04,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535714126] [2020-10-16 11:22:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535714126] [2020-10-16 11:22:04,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:22:04,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602337197] [2020-10-16 11:22:04,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:22:04,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:22:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:22:04,687 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 5 states. [2020-10-16 11:22:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:04,731 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-10-16 11:22:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:22:04,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 11:22:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:04,733 INFO L225 Difference]: With dead ends: 162 [2020-10-16 11:22:04,734 INFO L226 Difference]: Without dead ends: 125 [2020-10-16 11:22:04,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:22:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-16 11:22:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-16 11:22:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-16 11:22:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-10-16 11:22:04,741 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-10-16 11:22:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:04,741 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-10-16 11:22:04,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:22:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-10-16 11:22:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:22:04,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:04,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:04,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:22:04,743 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-10-16 11:22:04,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:04,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198417737] [2020-10-16 11:22:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198417737] [2020-10-16 11:22:04,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:22:04,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797984731] [2020-10-16 11:22:04,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:22:04,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:22:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,807 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-10-16 11:22:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:04,825 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-10-16 11:22:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:22:04,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 11:22:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:04,828 INFO L225 Difference]: With dead ends: 157 [2020-10-16 11:22:04,828 INFO L226 Difference]: Without dead ends: 120 [2020-10-16 11:22:04,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-16 11:22:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-16 11:22:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 11:22:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-10-16 11:22:04,836 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-10-16 11:22:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:04,837 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-10-16 11:22:04,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:22:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-10-16 11:22:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:22:04,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:04,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:04,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:22:04,839 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:04,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-10-16 11:22:04,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:04,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342700559] [2020-10-16 11:22:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:04,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342700559] [2020-10-16 11:22:04,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:04,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:22:04,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111817511] [2020-10-16 11:22:04,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:22:04,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:04,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:22:04,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:22:04,949 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 6 states. [2020-10-16 11:22:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:05,016 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-10-16 11:22:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:22:05,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 11:22:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:05,018 INFO L225 Difference]: With dead ends: 112 [2020-10-16 11:22:05,018 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 11:22:05,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:22:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 11:22:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 11:22:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 11:22:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 11:22:05,021 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-10-16 11:22:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:05,022 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 11:22:05,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:22:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 11:22:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:22:05,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:05,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:05,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:22:05,024 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:05,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:05,024 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-10-16 11:22:05,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:05,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825792386] [2020-10-16 11:22:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:05,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825792386] [2020-10-16 11:22:05,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:05,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:22:05,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115323838] [2020-10-16 11:22:05,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:22:05,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:05,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:22:05,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:22:05,078 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 11:22:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:05,088 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 11:22:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:22:05,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:22:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:05,089 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:22:05,089 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:22:05,089 INFO L677 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 [2020-10-16 11:22:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:22:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:22:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:22:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:22:05,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:22:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:05,090 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:22:05,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:22:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:22:05,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:22:05,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:22:05,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:22:05 BasicIcfg [2020-10-16 11:22:05,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:22:05,097 INFO L168 Benchmark]: Toolchain (without parser) took 4543.41 ms. Allocated memory was 141.0 MB in the beginning and 244.3 MB in the end (delta: 103.3 MB). Free memory was 102.6 MB in the beginning and 166.2 MB in the end (delta: -63.5 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,098 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.56 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 160.1 MB in the end (delta: -57.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.79 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,101 INFO L168 Benchmark]: Boogie Preprocessor took 23.66 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,102 INFO L168 Benchmark]: RCFGBuilder took 423.87 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 133.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,103 INFO L168 Benchmark]: TraceAbstraction took 3275.49 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 133.8 MB in the beginning and 166.2 MB in the end (delta: -32.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:05,107 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 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.56 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 160.1 MB in the end (delta: -57.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.79 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.66 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.87 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 133.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3275.49 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 133.8 MB in the beginning and 166.2 MB in the end (delta: -32.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 859 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 2362 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 157 SDtfs, 114 SDslu, 178 SDs, 0 SdLazy, 97 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2567 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...