/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/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 21:44:21,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 21:44:21,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 21:44:21,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 21:44:21,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 21:44:21,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 21:44:21,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 21:44:21,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 21:44:21,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 21:44:21,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 21:44:21,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 21:44:21,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 21:44:21,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 21:44:21,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 21:44:21,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 21:44:21,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 21:44:21,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 21:44:21,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 21:44:21,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 21:44:21,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 21:44:21,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 21:44:21,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 21:44:21,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 21:44:21,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 21:44:21,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 21:44:21,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 21:44:21,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 21:44:21,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 21:44:21,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 21:44:21,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 21:44:21,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 21:44:21,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 21:44:21,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 21:44:21,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 21:44:21,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 21:44:21,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 21:44:21,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 21:44:21,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 21:44:21,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 21:44:21,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 21:44:21,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 21:44:21,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 21:44:21,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 21:44:21,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 21:44:21,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 21:44:21,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 21:44:21,170 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 21:44:21,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 21:44:21,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 21:44:21,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 21:44:21,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 21:44:21,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 21:44:21,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 21:44:21,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 21:44:21,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 21:44:21,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 21:44:21,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 21:44:21,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 21:44:21,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 21:44:21,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 21:44:21,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 21:44:21,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 21:44:21,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 21:44:21,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 21:44:21,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 21:44:21,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 21:44:21,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 21:44:21,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 21:44:21,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 21:44:21,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 21:44:21,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 21:44:21,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 21:44:21,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 21:44:21,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 21:44:21,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 21:44:21,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 21:44:21,632 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 21:44:21,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-09-14 21:44:21,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b811a717/7ee2978857af46c39e4b1ff5a13392be/FLAG0b076a8d8 [2020-09-14 21:44:22,306 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 21:44:22,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-09-14 21:44:22,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b811a717/7ee2978857af46c39e4b1ff5a13392be/FLAG0b076a8d8 [2020-09-14 21:44:22,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b811a717/7ee2978857af46c39e4b1ff5a13392be [2020-09-14 21:44:22,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 21:44:22,660 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 21:44:22,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 21:44:22,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 21:44:22,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 21:44:22,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 09:44:22" (1/1) ... [2020-09-14 21:44:22,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db70816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:22, skipping insertion in model container [2020-09-14 21:44:22,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 09:44:22" (1/1) ... [2020-09-14 21:44:22,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 21:44:22,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 21:44:23,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 21:44:23,306 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 21:44:23,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 21:44:23,502 INFO L208 MainTranslator]: Completed translation [2020-09-14 21:44:23,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23 WrapperNode [2020-09-14 21:44:23,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 21:44:23,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 21:44:23,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 21:44:23,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 21:44:23,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 21:44:23,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 21:44:23,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 21:44:23,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 21:44:23,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... [2020-09-14 21:44:23,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 21:44:23,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 21:44:23,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 21:44:23,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 21:44:23,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 21:44:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 21:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 21:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 21:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 21:44:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 21:44:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 21:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 21:44:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 21:44:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 21:44:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 21:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 21:44:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 21:44:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 21:44:23,682 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 21:44:24,108 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 21:44:24,109 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 21:44:24,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 09:44:24 BoogieIcfgContainer [2020-09-14 21:44:24,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 21:44:24,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 21:44:24,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 21:44:24,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 21:44:24,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 09:44:22" (1/3) ... [2020-09-14 21:44:24,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2310a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 09:44:24, skipping insertion in model container [2020-09-14 21:44:24,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:44:23" (2/3) ... [2020-09-14 21:44:24,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2310a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 09:44:24, skipping insertion in model container [2020-09-14 21:44:24,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 09:44:24" (3/3) ... [2020-09-14 21:44:24,124 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-09-14 21:44:24,135 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 21:44:24,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 21:44:24,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 21:44:24,148 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 21:44:24,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,178 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,178 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,181 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,182 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,182 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:44:24,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 21:44:24,253 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 21:44:24,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 21:44:24,253 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 21:44:24,254 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 21:44:24,254 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 21:44:24,254 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 21:44:24,254 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 21:44:24,254 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 21:44:24,273 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-14 21:44:24,275 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 21:44:24,324 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 21:44:24,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 21:44:24,331 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 54 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. [2020-09-14 21:44:24,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 21:44:24,354 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 21:44:24,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 21:44:24,355 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 54 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. [2020-09-14 21:44:24,358 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 21:44:24,359 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 21:44:25,856 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-14 21:44:26,025 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-14 21:44:26,025 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-14 21:44:26,031 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 21:44:26,059 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 21:44:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 21:44:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 21:44:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:26,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:26,073 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-14 21:44:26,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:26,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210544521] [2020-09-14 21:44:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:26,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210544521] [2020-09-14 21:44:26,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:26,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 21:44:26,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058055888] [2020-09-14 21:44:26,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:44:26,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:26,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:44:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:44:26,417 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 21:44:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:26,495 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-14 21:44:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:44:26,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 21:44:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:26,528 INFO L225 Difference]: With dead ends: 282 [2020-09-14 21:44:26,528 INFO L226 Difference]: Without dead ends: 218 [2020-09-14 21:44:26,530 INFO L675 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 [2020-09-14 21:44:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-14 21:44:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-14 21:44:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-14 21:44:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-14 21:44:26,631 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-14 21:44:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:26,635 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-14 21:44:26,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:44:26,636 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-14 21:44:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 21:44:26,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:26,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:26,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 21:44:26,640 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-09-14 21:44:26,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:26,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101083471] [2020-09-14 21:44:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:26,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101083471] [2020-09-14 21:44:26,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:26,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:44:26,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575426967] [2020-09-14 21:44:26,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:44:26,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:26,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:44:26,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:44:26,753 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-14 21:44:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:26,794 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-14 21:44:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 21:44:26,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 21:44:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:26,798 INFO L225 Difference]: With dead ends: 242 [2020-09-14 21:44:26,798 INFO L226 Difference]: Without dead ends: 146 [2020-09-14 21:44:26,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:44:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-14 21:44:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-14 21:44:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-14 21:44:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-14 21:44:26,808 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-14 21:44:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:26,809 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-14 21:44:26,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:44:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-14 21:44:26,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 21:44:26,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:26,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:26,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 21:44:26,811 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:26,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-14 21:44:26,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:26,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392735903] [2020-09-14 21:44:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:26,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392735903] [2020-09-14 21:44:26,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:26,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:44:26,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978392220] [2020-09-14 21:44:26,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:44:26,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:26,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:44:26,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:44:26,868 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-14 21:44:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:26,881 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-09-14 21:44:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:44:26,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-14 21:44:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:26,883 INFO L225 Difference]: With dead ends: 138 [2020-09-14 21:44:26,883 INFO L226 Difference]: Without dead ends: 138 [2020-09-14 21:44:26,884 INFO L675 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 [2020-09-14 21:44:26,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-14 21:44:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-14 21:44:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-14 21:44:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-09-14 21:44:26,892 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-09-14 21:44:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:26,893 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-09-14 21:44:26,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:44:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-09-14 21:44:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 21:44:26,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:26,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:26,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 21:44:26,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-09-14 21:44:26,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:26,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724158580] [2020-09-14 21:44:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:26,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724158580] [2020-09-14 21:44:26,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:26,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 21:44:26,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953432523] [2020-09-14 21:44:26,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:44:26,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:44:26,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:44:26,959 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-09-14 21:44:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:26,966 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-09-14 21:44:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:44:26,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-14 21:44:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:26,968 INFO L225 Difference]: With dead ends: 134 [2020-09-14 21:44:26,968 INFO L226 Difference]: Without dead ends: 134 [2020-09-14 21:44:26,970 INFO L675 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 [2020-09-14 21:44:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-14 21:44:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-14 21:44:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-14 21:44:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-09-14 21:44:26,986 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-09-14 21:44:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:26,988 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-09-14 21:44:26,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:44:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-09-14 21:44:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 21:44:26,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:26,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:26,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 21:44:26,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 1 times [2020-09-14 21:44:26,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:26,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112524175] [2020-09-14 21:44:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:27,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112524175] [2020-09-14 21:44:27,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:27,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:44:27,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719829570] [2020-09-14 21:44:27,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:44:27,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:27,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:44:27,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:44:27,083 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-09-14 21:44:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:27,107 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-09-14 21:44:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 21:44:27,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 21:44:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:27,110 INFO L225 Difference]: With dead ends: 194 [2020-09-14 21:44:27,110 INFO L226 Difference]: Without dead ends: 104 [2020-09-14 21:44:27,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:44:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-14 21:44:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-14 21:44:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-14 21:44:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-14 21:44:27,116 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-09-14 21:44:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:27,116 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-14 21:44:27,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:44:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-14 21:44:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 21:44:27,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:27,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:27,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 21:44:27,118 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:27,119 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 2 times [2020-09-14 21:44:27,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:27,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146865438] [2020-09-14 21:44:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:27,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146865438] [2020-09-14 21:44:27,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:27,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 21:44:27,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723386580] [2020-09-14 21:44:27,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:44:27,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:27,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:44:27,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:44:27,190 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-14 21:44:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:27,222 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-09-14 21:44:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 21:44:27,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 21:44:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:27,223 INFO L225 Difference]: With dead ends: 128 [2020-09-14 21:44:27,224 INFO L226 Difference]: Without dead ends: 68 [2020-09-14 21:44:27,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:44:27,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-14 21:44:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-14 21:44:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-14 21:44:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-14 21:44:27,236 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-09-14 21:44:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:27,236 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-14 21:44:27,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:44:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-14 21:44:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 21:44:27,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:27,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:27,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 21:44:27,238 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:27,240 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 3 times [2020-09-14 21:44:27,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:27,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669247606] [2020-09-14 21:44:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:27,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669247606] [2020-09-14 21:44:27,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:27,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:44:27,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700134950] [2020-09-14 21:44:27,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:44:27,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:27,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:44:27,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:44:27,370 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-14 21:44:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:27,408 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-14 21:44:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 21:44:27,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 21:44:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:27,410 INFO L225 Difference]: With dead ends: 81 [2020-09-14 21:44:27,410 INFO L226 Difference]: Without dead ends: 59 [2020-09-14 21:44:27,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:44:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-14 21:44:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-14 21:44:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-14 21:44:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-14 21:44:27,413 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-14 21:44:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:27,414 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-14 21:44:27,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:44:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-14 21:44:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 21:44:27,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:27,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:27,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 21:44:27,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:27,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-09-14 21:44:27,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:27,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106561318] [2020-09-14 21:44:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:27,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106561318] [2020-09-14 21:44:27,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:27,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 21:44:27,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429353146] [2020-09-14 21:44:27,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 21:44:27,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:27,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 21:44:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:44:27,520 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-14 21:44:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:27,578 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-14 21:44:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 21:44:27,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-14 21:44:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:27,579 INFO L225 Difference]: With dead ends: 60 [2020-09-14 21:44:27,579 INFO L226 Difference]: Without dead ends: 45 [2020-09-14 21:44:27,580 INFO L675 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 [2020-09-14 21:44:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-14 21:44:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-14 21:44:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-14 21:44:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-14 21:44:27,585 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-14 21:44:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:27,585 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-14 21:44:27,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 21:44:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-14 21:44:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 21:44:27,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:27,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:27,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 21:44:27,587 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-14 21:44:27,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:27,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107709179] [2020-09-14 21:44:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:27,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107709179] [2020-09-14 21:44:27,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:27,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 21:44:27,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668214145] [2020-09-14 21:44:27,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 21:44:27,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:27,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 21:44:27,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 21:44:27,665 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-14 21:44:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:27,723 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-14 21:44:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 21:44:27,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 21:44:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:27,724 INFO L225 Difference]: With dead ends: 42 [2020-09-14 21:44:27,724 INFO L226 Difference]: Without dead ends: 36 [2020-09-14 21:44:27,724 INFO L675 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 [2020-09-14 21:44:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-14 21:44:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-14 21:44:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-14 21:44:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-14 21:44:27,727 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-14 21:44:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:27,727 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-14 21:44:27,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 21:44:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-14 21:44:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 21:44:27,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:44:27,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:44:27,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 21:44:27,729 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:44:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:44:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-14 21:44:27,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:44:27,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72047327] [2020-09-14 21:44:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:44:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:44:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:44:27,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72047327] [2020-09-14 21:44:27,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:44:27,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:44:27,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194116446] [2020-09-14 21:44:27,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:44:27,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:44:27,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:44:27,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:44:27,771 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-14 21:44:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:44:27,776 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-14 21:44:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:44:27,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-14 21:44:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:44:27,777 INFO L225 Difference]: With dead ends: 35 [2020-09-14 21:44:27,777 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 21:44:27,777 INFO L675 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 [2020-09-14 21:44:27,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 21:44:27,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 21:44:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 21:44:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 21:44:27,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 21:44:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:44:27,779 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 21:44:27,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:44:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 21:44:27,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 21:44:27,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 21:44:27,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 09:44:27 BasicIcfg [2020-09-14 21:44:27,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 21:44:27,786 INFO L168 Benchmark]: Toolchain (without parser) took 5130.10 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.2 MB in the beginning and 135.2 MB in the end (delta: -33.0 MB). Peak memory consumption was 72.9 MB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,787 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.86 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 159.6 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.56 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,790 INFO L168 Benchmark]: Boogie Preprocessor took 29.20 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,790 INFO L168 Benchmark]: RCFGBuilder took 522.70 ms. Allocated memory is still 203.4 MB. Free memory was 155.8 MB in the beginning and 133.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,791 INFO L168 Benchmark]: TraceAbstraction took 3668.41 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 133.9 MB in the beginning and 135.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-09-14 21:44:27,795 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 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 844.86 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 159.6 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.56 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.20 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.70 ms. Allocated memory is still 203.4 MB. Free memory was 155.8 MB in the beginning and 133.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3668.41 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 133.9 MB in the beginning and 135.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 179 SDtfs, 126 SDslu, 183 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 4013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...