/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:34:52,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:34:52,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:34:52,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:34:52,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:34:52,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:34:52,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:34:52,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:34:52,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:34:52,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:34:52,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:34:52,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:34:52,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:34:52,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:34:52,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:34:52,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:34:52,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:34:52,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:34:52,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:34:52,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:34:52,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:34:52,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:34:52,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:34:52,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:34:52,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:34:52,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:34:52,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:34:52,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:34:52,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:34:52,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:34:52,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:34:52,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:34:52,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:34:52,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:34:52,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:34:52,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:34:52,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:34:52,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:34:52,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:34:52,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:34:52,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:34:52,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 23:34:52,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:34:52,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:34:52,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:34:52,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:34:52,601 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:34:52,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:34:52,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:34:52,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:34:52,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:34:52,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:34:52,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:34:52,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:34:52,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:34:52,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:34:52,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:34:52,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:34:52,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:34:52,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:34:52,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:34:52,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:34:52,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:34:52,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:34:52,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:34:52,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:34:52,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:34:52,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:34:52,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:34:52,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:34:52,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:34:52,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:34:53,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:34:53,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:34:53,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:34:53,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:34:53,091 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:34:53,092 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-09-16 23:34:53,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7497117ec/a1090a7d33f944729bfae3b4fa6e1f69/FLAGa49d57fcf [2020-09-16 23:34:53,842 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:34:53,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-09-16 23:34:53,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7497117ec/a1090a7d33f944729bfae3b4fa6e1f69/FLAGa49d57fcf [2020-09-16 23:34:54,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7497117ec/a1090a7d33f944729bfae3b4fa6e1f69 [2020-09-16 23:34:54,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:34:54,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:34:54,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:34:54,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:34:54,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:34:54,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a18e4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54, skipping insertion in model container [2020-09-16 23:34:54,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:34:54,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:34:54,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:34:54,749 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:34:54,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:34:54,898 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:34:54,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54 WrapperNode [2020-09-16 23:34:54,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:34:54,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:34:54,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:34:54,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:34:54,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:34:54,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:34:54,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:34:54,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:34:54,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... [2020-09-16 23:34:54,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:34:54,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:34:54,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:34:54,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:34:54,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:34:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:34:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:34:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:34:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:34:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:34:55,076 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:34:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:34:55,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:34:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:34:55,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:34:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:34:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:34:55,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:34:55,086 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:34:55,496 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:34:55,497 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:34:55,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:34:55 BoogieIcfgContainer [2020-09-16 23:34:55,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:34:55,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:34:55,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:34:55,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:34:55,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:34:54" (1/3) ... [2020-09-16 23:34:55,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d55409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:34:55, skipping insertion in model container [2020-09-16 23:34:55,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:34:54" (2/3) ... [2020-09-16 23:34:55,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d55409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:34:55, skipping insertion in model container [2020-09-16 23:34:55,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:34:55" (3/3) ... [2020-09-16 23:34:55,513 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-09-16 23:34:55,525 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:34:55,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:34:55,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:34:55,538 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:34:55,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,578 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,579 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,597 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:34:55,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:34:55,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:34:55,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:34:55,653 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:34:55,653 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:34:55,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:34:55,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:34:55,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:34:55,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:34:55,673 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-16 23:34:55,676 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-16 23:34:55,724 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-16 23:34:55,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:34:55,732 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-16 23:34:55,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-16 23:34:55,782 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-16 23:34:55,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:34:55,783 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-16 23:34:55,785 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-16 23:34:55,787 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:34:57,243 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-16 23:34:57,527 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-16 23:34:57,527 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-16 23:34:57,532 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-16 23:34:57,567 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-16 23:34:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-16 23:34:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:34:57,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:57,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:57,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:57,590 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-16 23:34:57,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:57,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751349343] [2020-09-16 23:34:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:57,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751349343] [2020-09-16 23:34:57,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:57,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:34:57,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949210215] [2020-09-16 23:34:57,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:34:57,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:57,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:34:57,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:34:57,908 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-16 23:34:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:57,973 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-16 23:34:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:34:57,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 23:34:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:57,999 INFO L225 Difference]: With dead ends: 222 [2020-09-16 23:34:57,999 INFO L226 Difference]: Without dead ends: 174 [2020-09-16 23:34:58,001 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 [2020-09-16 23:34:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-16 23:34:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-16 23:34:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-16 23:34:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-16 23:34:58,070 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-16 23:34:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:58,071 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-16 23:34:58,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:34:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-16 23:34:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:34:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:58,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:58,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:34:58,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119381, now seen corresponding path program 1 times [2020-09-16 23:34:58,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:58,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315920430] [2020-09-16 23:34:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:58,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315920430] [2020-09-16 23:34:58,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:58,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:34:58,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15933286] [2020-09-16 23:34:58,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:34:58,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:34:58,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:34:58,230 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 4 states. [2020-09-16 23:34:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:58,271 INFO L93 Difference]: Finished difference Result 204 states and 513 transitions. [2020-09-16 23:34:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:34:58,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 23:34:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:58,273 INFO L225 Difference]: With dead ends: 204 [2020-09-16 23:34:58,274 INFO L226 Difference]: Without dead ends: 108 [2020-09-16 23:34:58,275 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 [2020-09-16 23:34:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-16 23:34:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-16 23:34:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-16 23:34:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 253 transitions. [2020-09-16 23:34:58,291 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 253 transitions. Word has length 9 [2020-09-16 23:34:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:58,291 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 253 transitions. [2020-09-16 23:34:58,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:34:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 253 transitions. [2020-09-16 23:34:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:34:58,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:58,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:58,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:34:58,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:58,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:58,296 INFO L82 PathProgramCache]: Analyzing trace with hash 409264718, now seen corresponding path program 1 times [2020-09-16 23:34:58,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:58,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375694223] [2020-09-16 23:34:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:58,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375694223] [2020-09-16 23:34:58,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:58,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:34:58,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661879241] [2020-09-16 23:34:58,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:34:58,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:58,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:34:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:34:58,371 INFO L87 Difference]: Start difference. First operand 108 states and 253 transitions. Second operand 3 states. [2020-09-16 23:34:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:58,384 INFO L93 Difference]: Finished difference Result 106 states and 246 transitions. [2020-09-16 23:34:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:34:58,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-16 23:34:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:58,391 INFO L225 Difference]: With dead ends: 106 [2020-09-16 23:34:58,392 INFO L226 Difference]: Without dead ends: 106 [2020-09-16 23:34:58,392 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 [2020-09-16 23:34:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-16 23:34:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-16 23:34:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-16 23:34:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 246 transitions. [2020-09-16 23:34:58,412 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 246 transitions. Word has length 11 [2020-09-16 23:34:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:58,413 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 246 transitions. [2020-09-16 23:34:58,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:34:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 246 transitions. [2020-09-16 23:34:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:34:58,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:58,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:58,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:34:58,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash -197699224, now seen corresponding path program 1 times [2020-09-16 23:34:58,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:58,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610149485] [2020-09-16 23:34:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:58,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610149485] [2020-09-16 23:34:58,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:58,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:34:58,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460326335] [2020-09-16 23:34:58,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:34:58,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:58,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:34:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:34:58,492 INFO L87 Difference]: Start difference. First operand 106 states and 246 transitions. Second operand 4 states. [2020-09-16 23:34:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:58,520 INFO L93 Difference]: Finished difference Result 138 states and 314 transitions. [2020-09-16 23:34:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:34:58,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 23:34:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:58,522 INFO L225 Difference]: With dead ends: 138 [2020-09-16 23:34:58,522 INFO L226 Difference]: Without dead ends: 60 [2020-09-16 23:34:58,523 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 [2020-09-16 23:34:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-16 23:34:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-16 23:34:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-16 23:34:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-16 23:34:58,528 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 12 [2020-09-16 23:34:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:58,529 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-16 23:34:58,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:34:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-16 23:34:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:34:58,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:58,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:58,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:34:58,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 2 times [2020-09-16 23:34:58,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:58,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468992090] [2020-09-16 23:34:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:58,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468992090] [2020-09-16 23:34:58,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:58,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:34:58,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088265523] [2020-09-16 23:34:58,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:34:58,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:34:58,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:34:58,654 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 4 states. [2020-09-16 23:34:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:58,685 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-09-16 23:34:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:34:58,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 23:34:58,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:58,686 INFO L225 Difference]: With dead ends: 73 [2020-09-16 23:34:58,687 INFO L226 Difference]: Without dead ends: 52 [2020-09-16 23:34:58,687 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 [2020-09-16 23:34:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-16 23:34:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-16 23:34:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-16 23:34:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-09-16 23:34:58,691 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-09-16 23:34:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:58,692 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-09-16 23:34:58,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:34:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-09-16 23:34:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:34:58,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:58,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:58,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:34:58,693 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-09-16 23:34:58,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:58,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235042482] [2020-09-16 23:34:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:58,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235042482] [2020-09-16 23:34:58,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:58,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:34:58,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484360827] [2020-09-16 23:34:58,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:34:58,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:58,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:34:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:34:58,779 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 5 states. [2020-09-16 23:34:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:58,830 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-09-16 23:34:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:34:58,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-16 23:34:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:58,832 INFO L225 Difference]: With dead ends: 53 [2020-09-16 23:34:58,832 INFO L226 Difference]: Without dead ends: 38 [2020-09-16 23:34:58,832 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 [2020-09-16 23:34:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-16 23:34:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-16 23:34:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-16 23:34:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-16 23:34:58,837 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-09-16 23:34:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:58,837 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-16 23:34:58,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:34:58,837 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-16 23:34:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:34:58,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:58,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:58,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:34:58,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:58,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-16 23:34:58,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:58,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959663679] [2020-09-16 23:34:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:58,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959663679] [2020-09-16 23:34:58,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:58,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:34:58,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629940345] [2020-09-16 23:34:58,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:34:58,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:58,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:34:58,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:34:58,969 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 6 states. [2020-09-16 23:34:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:59,043 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-16 23:34:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:34:59,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-16 23:34:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:59,044 INFO L225 Difference]: With dead ends: 35 [2020-09-16 23:34:59,044 INFO L226 Difference]: Without dead ends: 29 [2020-09-16 23:34:59,045 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 [2020-09-16 23:34:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-16 23:34:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-16 23:34:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-16 23:34:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-16 23:34:59,048 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-16 23:34:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:59,049 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-16 23:34:59,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:34:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-16 23:34:59,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-16 23:34:59,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:34:59,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:34:59,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:34:59,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:34:59,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:34:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-16 23:34:59,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:34:59,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377385191] [2020-09-16 23:34:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:34:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:34:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:34:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377385191] [2020-09-16 23:34:59,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:34:59,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:34:59,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619213110] [2020-09-16 23:34:59,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:34:59,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:34:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:34:59,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:34:59,134 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-16 23:34:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:34:59,140 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-16 23:34:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:34:59,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-16 23:34:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:34:59,142 INFO L225 Difference]: With dead ends: 28 [2020-09-16 23:34:59,142 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:34:59,142 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 [2020-09-16 23:34:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:34:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:34:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:34:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:34:59,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-16 23:34:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:34:59,144 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:34:59,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:34:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:34:59,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:34:59,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:34:59,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:34:59 BasicIcfg [2020-09-16 23:34:59,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:34:59,160 INFO L168 Benchmark]: Toolchain (without parser) took 5088.61 ms. Allocated memory was 137.9 MB in the beginning and 251.1 MB in the end (delta: 113.2 MB). Free memory was 98.4 MB in the beginning and 194.6 MB in the end (delta: -96.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-09-16 23:34:59,161 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 23:34:59,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.49 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 97.8 MB in the beginning and 157.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-16 23:34:59,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.95 ms. Allocated memory is still 201.9 MB. Free memory was 157.5 MB in the beginning and 154.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-16 23:34:59,166 INFO L168 Benchmark]: Boogie Preprocessor took 35.63 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 23:34:59,169 INFO L168 Benchmark]: RCFGBuilder took 507.68 ms. Allocated memory is still 201.9 MB. Free memory was 153.5 MB in the beginning and 131.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-16 23:34:59,170 INFO L168 Benchmark]: TraceAbstraction took 3651.25 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 131.2 MB in the beginning and 194.6 MB in the end (delta: -63.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 23:34:59,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 824.49 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 97.8 MB in the beginning and 157.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.95 ms. Allocated memory is still 201.9 MB. Free memory was 157.5 MB in the beginning and 154.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.63 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.68 ms. Allocated memory is still 201.9 MB. Free memory was 153.5 MB in the beginning and 131.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3651.25 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 131.2 MB in the beginning and 194.6 MB in the end (delta: -63.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 125 SDtfs, 102 SDslu, 132 SDs, 0 SdLazy, 102 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 3039 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...