/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:44:50,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:44:50,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:44:50,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:44:50,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:44:50,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:44:50,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:44:50,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:44:50,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:44:50,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:44:50,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:44:50,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:44:50,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:44:50,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:44:50,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:44:50,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:44:50,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:44:50,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:44:50,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:44:50,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:44:50,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:44:50,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:44:50,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:44:50,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:44:50,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:44:50,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:44:50,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:44:50,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:44:50,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:44:50,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:44:50,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:44:50,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:44:50,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:44:50,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:44:50,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:44:50,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:44:50,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:44:50,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:44:50,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:44:50,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:44:50,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:44:50,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:44:50,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:44:50,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:44:50,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:44:50,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:44:50,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:44:50,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:44:50,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:44:50,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:44:50,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:44:50,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:44:50,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:44:50,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:44:50,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:44:50,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:44:50,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:44:50,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:44:50,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:44:50,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:44:50,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:44:50,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:44:50,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:44:50,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:44:50,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:44:50,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:44:50,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:44:50,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:44:50,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:44:50,579 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:44:50,579 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:44:50,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:44:50,579 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:44:50,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:44:50,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:44:50,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:44:50,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:44:50,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:44:50,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-10-16 13:44:50,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3de82623e/7d7cef9a32bb4e0290c567d0a76728aa/FLAG18b6f9781 [2020-10-16 13:44:51,484 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:44:51,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-10-16 13:44:51,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3de82623e/7d7cef9a32bb4e0290c567d0a76728aa/FLAG18b6f9781 [2020-10-16 13:44:51,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3de82623e/7d7cef9a32bb4e0290c567d0a76728aa [2020-10-16 13:44:51,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:44:51,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:44:51,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:44:51,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:44:51,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:44:51,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:51,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bed768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51, skipping insertion in model container [2020-10-16 13:44:51,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:51,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:44:51,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:44:52,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:44:52,363 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:44:52,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:44:52,522 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:44:52,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52 WrapperNode [2020-10-16 13:44:52,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:44:52,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:44:52,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:44:52,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:44:52,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:44:52,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:44:52,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:44:52,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:44:52,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... [2020-10-16 13:44:52,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:44:52,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:44:52,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:44:52,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:44:52,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:44:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:44:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:44:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:44:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:44:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:44:52,679 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:44:53,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:44:53,072 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:44:53,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:53 BoogieIcfgContainer [2020-10-16 13:44:53,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:44:53,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:44:53,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:44:53,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:44:53,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:51" (1/3) ... [2020-10-16 13:44:53,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0d77ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:53, skipping insertion in model container [2020-10-16 13:44:53,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:52" (2/3) ... [2020-10-16 13:44:53,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0d77ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:53, skipping insertion in model container [2020-10-16 13:44:53,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:53" (3/3) ... [2020-10-16 13:44:53,084 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-10-16 13:44:53,093 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:44:53,094 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:44:53,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:44:53,103 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:44:53,132 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,133 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,133 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,135 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,135 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,137 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,137 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,143 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,143 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,150 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,150 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,151 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,154 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,154 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,155 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:53,157 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:44:53,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:44:53,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:44:53,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:44:53,191 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:44:53,191 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:44:53,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:44:53,191 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:44:53,191 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:44:53,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:44:53,205 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:44:53,206 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:53,209 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:53,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:53,264 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:44:53,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:44:53,270 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:44:53,273 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:44:54,532 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-16 13:44:54,711 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 13:44:54,711 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 13:44:54,718 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:44:54,746 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:44:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:44:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:44:54,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:54,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:54,757 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:54,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 13:44:54,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:54,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143957473] [2020-10-16 13:44:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143957473] [2020-10-16 13:44:55,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:44:55,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1530408828] [2020-10-16 13:44:55,011 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,014 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,032 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:44:55,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,037 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:55,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:55,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,061 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:44:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,106 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 13:44:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:55,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:44:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,124 INFO L225 Difference]: With dead ends: 282 [2020-10-16 13:44:55,125 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 13:44:55,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 13:44:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 13:44:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 13:44:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 13:44:55,199 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 13:44:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,201 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 13:44:55,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 13:44:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:44:55,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:44:55,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-16 13:44:55,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496393288] [2020-10-16 13:44:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496393288] [2020-10-16 13:44:55,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:55,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [586734855] [2020-10-16 13:44:55,331 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,331 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,333 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 13:44:55,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,366 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:55,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:55,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,368 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-16 13:44:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,387 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 13:44:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:55,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:44:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,391 INFO L225 Difference]: With dead ends: 202 [2020-10-16 13:44:55,391 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 13:44:55,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 13:44:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 13:44:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 13:44:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 13:44:55,413 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 13:44:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,414 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 13:44:55,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 13:44:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:44:55,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:44:55,416 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-16 13:44:55,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895840247] [2020-10-16 13:44:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895840247] [2020-10-16 13:44:55,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:44:55,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [258015329] [2020-10-16 13:44:55,462 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,463 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,465 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-16 13:44:55,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,534 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:55,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:55,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,536 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 13:44:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,548 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-16 13:44:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:55,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 13:44:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,555 INFO L225 Difference]: With dead ends: 194 [2020-10-16 13:44:55,555 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 13:44:55,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 13:44:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-16 13:44:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-16 13:44:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-16 13:44:55,593 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-16 13:44:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,593 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-16 13:44:55,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-16 13:44:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:44:55,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:44:55,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-16 13:44:55,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101619150] [2020-10-16 13:44:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101619150] [2020-10-16 13:44:55,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:55,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [441750030] [2020-10-16 13:44:55,699 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,701 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,703 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:44:55,703 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,723 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:55,753 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:55,780 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:55,795 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:44:55,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:44:55,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:44:55,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:55,796 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-10-16 13:44:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,854 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-10-16 13:44:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:44:55,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:44:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,856 INFO L225 Difference]: With dead ends: 187 [2020-10-16 13:44:55,856 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 13:44:55,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:44:55,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 13:44:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-16 13:44:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-16 13:44:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-16 13:44:55,865 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-10-16 13:44:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,866 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-16 13:44:55,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:44:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-16 13:44:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:44:55,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:44:55,868 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-16 13:44:55,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391281336] [2020-10-16 13:44:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391281336] [2020-10-16 13:44:55,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:44:55,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [143226175] [2020-10-16 13:44:55,975 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,980 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,984 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 13:44:55,986 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:56,076 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3040#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:44:56,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:44:56,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:44:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:44:56,077 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 7 states. [2020-10-16 13:44:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:56,130 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-16 13:44:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:44:56,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-16 13:44:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:56,132 INFO L225 Difference]: With dead ends: 118 [2020-10-16 13:44:56,132 INFO L226 Difference]: Without dead ends: 108 [2020-10-16 13:44:56,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:44:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-16 13:44:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-16 13:44:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-16 13:44:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-16 13:44:56,139 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-16 13:44:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:56,139 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-16 13:44:56,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:44:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-16 13:44:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:56,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:56,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:56,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:44:56,141 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-16 13:44:56,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:56,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188539675] [2020-10-16 13:44:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:56,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188539675] [2020-10-16 13:44:56,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:56,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:56,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [919575893] [2020-10-16 13:44:56,210 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:56,213 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:56,221 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-10-16 13:44:56,221 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:56,327 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:56,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:56,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:56,328 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-16 13:44:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:56,345 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-16 13:44:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:56,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:56,346 INFO L225 Difference]: With dead ends: 133 [2020-10-16 13:44:56,346 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 13:44:56,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 13:44:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 13:44:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 13:44:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-16 13:44:56,350 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-16 13:44:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:56,351 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-16 13:44:56,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-16 13:44:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:56,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:56,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:44:56,352 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-16 13:44:56,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:56,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006620225] [2020-10-16 13:44:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:56,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006620225] [2020-10-16 13:44:56,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:56,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:56,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1371406834] [2020-10-16 13:44:56,431 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:56,433 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:56,437 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-10-16 13:44:56,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:56,464 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:56,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:56,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:56,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:56,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:56,465 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-16 13:44:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:56,483 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-16 13:44:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:56,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:56,484 INFO L225 Difference]: With dead ends: 63 [2020-10-16 13:44:56,484 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 13:44:56,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 13:44:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 13:44:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 13:44:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-16 13:44:56,487 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-16 13:44:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:56,487 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-16 13:44:56,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-16 13:44:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:56,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:56,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:56,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:44:56,489 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-16 13:44:56,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:56,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082589961] [2020-10-16 13:44:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:56,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082589961] [2020-10-16 13:44:56,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:56,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:56,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1623909220] [2020-10-16 13:44:56,530 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:56,532 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:56,536 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-16 13:44:56,536 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:56,544 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:56,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:56,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:56,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:56,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:56,546 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-16 13:44:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:56,567 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-16 13:44:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:44:56,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:56,568 INFO L225 Difference]: With dead ends: 56 [2020-10-16 13:44:56,568 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 13:44:56,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 13:44:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 13:44:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 13:44:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-16 13:44:56,571 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-16 13:44:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:56,571 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-16 13:44:56,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-16 13:44:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:56,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:56,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:56,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:44:56,573 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:56,573 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-16 13:44:56,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:56,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343592098] [2020-10-16 13:44:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:56,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343592098] [2020-10-16 13:44:56,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:56,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:56,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1862005965] [2020-10-16 13:44:56,615 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:56,617 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:56,621 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-16 13:44:56,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:56,626 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:56,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:56,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:56,628 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-16 13:44:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:56,643 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-16 13:44:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:56,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:56,644 INFO L225 Difference]: With dead ends: 34 [2020-10-16 13:44:56,644 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:44:56,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:44:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:44:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:44:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:44:56,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:44:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:56,646 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:44:56,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:44:56,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:44:56,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:44:56,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:56 BasicIcfg [2020-10-16 13:44:56,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:44:56,654 INFO L168 Benchmark]: Toolchain (without parser) took 4912.66 ms. Allocated memory was 141.0 MB in the beginning and 246.9 MB in the end (delta: 105.9 MB). Free memory was 101.5 MB in the beginning and 116.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:56,655 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:44:56,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.11 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 161.6 MB in the end (delta: -60.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:56,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.03 ms. Allocated memory is still 204.5 MB. Free memory was 161.6 MB in the beginning and 159.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:56,657 INFO L168 Benchmark]: Boogie Preprocessor took 28.87 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 157.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:56,658 INFO L168 Benchmark]: RCFGBuilder took 470.56 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 135.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:56,659 INFO L168 Benchmark]: TraceAbstraction took 3575.31 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 134.5 MB in the beginning and 116.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:56,663 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.11 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 161.6 MB in the end (delta: -60.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.03 ms. Allocated memory is still 204.5 MB. Free memory was 161.6 MB in the beginning and 159.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.87 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 157.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.56 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 135.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3575.31 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 134.5 MB in the beginning and 116.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 673 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 186 SDtfs, 121 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...