/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/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:20:59,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:20:59,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:20:59,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:20:59,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:20:59,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:20:59,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:20:59,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:20:59,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:20:59,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:20:59,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:20:59,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:20:59,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:20:59,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:20:59,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:20:59,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:20:59,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:20:59,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:20:59,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:20:59,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:20:59,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:20:59,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:20:59,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:20:59,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:20:59,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:20:59,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:20:59,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:20:59,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:20:59,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:20:59,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:20:59,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:20:59,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:20:59,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:20:59,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:20:59,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:20:59,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:20:59,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:20:59,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:20:59,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:20:59,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:20:59,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:20:59,528 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 [2020-09-11 23:20:59,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:20:59,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:20:59,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:20:59,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:20:59,556 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:20:59,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:20:59,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:20:59,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:20:59,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:20:59,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:20:59,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:20:59,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:20:59,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:20:59,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:20:59,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:20:59,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:20:59,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:20:59,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:20:59,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:20:59,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:20:59,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:20:59,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:20:59,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:20:59,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:20:59,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:20:59,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:20:59,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:20:59,561 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:20:59,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:20:59,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:20:59,561 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:20:59,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:21:00,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:21:00,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:21:00,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:21:00,019 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:21:00,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-09-11 23:21:00,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01891293d/3e6633230602417fbffebad3b01b3d94/FLAG7093c84ac [2020-09-11 23:21:00,787 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:21:00,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-09-11 23:21:00,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01891293d/3e6633230602417fbffebad3b01b3d94/FLAG7093c84ac [2020-09-11 23:21:01,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01891293d/3e6633230602417fbffebad3b01b3d94 [2020-09-11 23:21:01,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:21:01,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:21:01,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:21:01,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:21:01,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:21:01,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca3833b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01, skipping insertion in model container [2020-09-11 23:21:01,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:21:01,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:21:01,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:21:01,735 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:21:01,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:21:01,884 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:21:01,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01 WrapperNode [2020-09-11 23:21:01,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:21:01,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:21:01,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:21:01,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:21:01,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:21:01,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:21:01,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:21:01,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:21:01,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... [2020-09-11 23:21:01,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:21:01,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:21:01,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:21:01,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:21:01,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:21:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:21:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:21:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:21:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:21:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:21:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:21:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:21:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:21:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:21:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:21:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:21:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:21:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:21:02,079 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:21:02,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:21:02,479 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:21:02,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:21:02 BoogieIcfgContainer [2020-09-11 23:21:02,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:21:02,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:21:02,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:21:02,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:21:02,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:21:01" (1/3) ... [2020-09-11 23:21:02,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728b9a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:21:02, skipping insertion in model container [2020-09-11 23:21:02,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:21:01" (2/3) ... [2020-09-11 23:21:02,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728b9a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:21:02, skipping insertion in model container [2020-09-11 23:21:02,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:21:02" (3/3) ... [2020-09-11 23:21:02,495 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-09-11 23:21:02,506 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:21:02,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:21:02,517 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:21:02,518 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:21:02,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,574 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:21:02,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:21:02,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:21:02,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:21:02,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:21:02,626 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:21:02,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:21:02,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:21:02,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:21:02,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:21:02,643 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:21:02,645 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:21:02,692 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:21:02,692 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:21:02,698 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 46 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. [2020-09-11 23:21:02,701 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:21:02,726 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:21:02,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:21:02,727 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 46 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. [2020-09-11 23:21:02,729 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:21:02,731 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:21:04,218 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-11 23:21:04,256 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 23:21:04,256 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 23:21:04,261 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:21:04,290 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:21:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:21:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:21:04,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:04,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:04,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:04,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 23:21:04,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:04,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785600805] [2020-09-11 23:21:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:04,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785600805] [2020-09-11 23:21:04,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:04,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:21:04,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1269854081] [2020-09-11 23:21:04,578 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:04,582 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:04,599 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:21:04,599 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:04,602 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:04,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:21:04,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:04,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:21:04,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:21:04,625 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:21:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:04,659 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:21:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:21:04,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:21:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:04,680 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:21:04,680 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:21:04,682 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 [2020-09-11 23:21:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:21:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:21:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:21:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:21:04,758 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:21:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:04,761 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:21:04,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:21:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:21:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:21:04,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:04,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:04,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:21:04,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:04,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-09-11 23:21:04,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:04,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284360789] [2020-09-11 23:21:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:04,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284360789] [2020-09-11 23:21:04,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:04,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:04,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [686517517] [2020-09-11 23:21:04,898 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:04,899 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:04,901 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-11 23:21:04,901 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:04,919 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:04,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:21:04,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:04,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:21:04,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:21:04,922 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:21:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:04,955 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:21:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:21:04,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:21:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:04,958 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:21:04,958 INFO L226 Difference]: Without dead ends: 146 [2020-09-11 23:21:04,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:21:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-11 23:21:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-11 23:21:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 23:21:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-11 23:21:04,981 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-11 23:21:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:04,981 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-11 23:21:04,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:21:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-11 23:21:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:21:04,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:04,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:04,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:21:04,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-09-11 23:21:04,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:04,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334250307] [2020-09-11 23:21:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:05,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334250307] [2020-09-11 23:21:05,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:05,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:05,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1914348563] [2020-09-11 23:21:05,052 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:05,053 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:05,056 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-11 23:21:05,056 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:05,082 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:05,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:21:05,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:05,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:21:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:21:05,084 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-11 23:21:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:05,102 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-09-11 23:21:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:21:05,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:21:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:05,104 INFO L225 Difference]: With dead ends: 138 [2020-09-11 23:21:05,104 INFO L226 Difference]: Without dead ends: 138 [2020-09-11 23:21:05,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:21:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-11 23:21:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-11 23:21:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-11 23:21:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-09-11 23:21:05,115 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-09-11 23:21:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:05,115 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-09-11 23:21:05,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:21:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-09-11 23:21:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:21:05,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:05,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:05,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:21:05,118 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:05,118 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-09-11 23:21:05,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:05,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293026181] [2020-09-11 23:21:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:05,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293026181] [2020-09-11 23:21:05,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:05,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:05,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1046283951] [2020-09-11 23:21:05,196 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:05,198 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:05,200 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-11 23:21:05,201 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:05,236 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:05,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:21:05,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:05,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:21:05,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:21:05,238 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 4 states. [2020-09-11 23:21:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:05,258 INFO L93 Difference]: Finished difference Result 178 states and 418 transitions. [2020-09-11 23:21:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:21:05,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 23:21:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:05,260 INFO L225 Difference]: With dead ends: 178 [2020-09-11 23:21:05,260 INFO L226 Difference]: Without dead ends: 82 [2020-09-11 23:21:05,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:21:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-11 23:21:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-11 23:21:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-11 23:21:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-09-11 23:21:05,267 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 12 [2020-09-11 23:21:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:05,268 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-09-11 23:21:05,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:21:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-09-11 23:21:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:21:05,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:05,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:05,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:21:05,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:05,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:05,270 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-09-11 23:21:05,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:05,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684117333] [2020-09-11 23:21:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:05,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684117333] [2020-09-11 23:21:05,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:05,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:05,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [12637954] [2020-09-11 23:21:05,365 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:05,366 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:05,370 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-09-11 23:21:05,371 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:05,466 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:05,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:21:05,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:05,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:21:05,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:21:05,467 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 4 states. [2020-09-11 23:21:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:05,484 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-09-11 23:21:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:21:05,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:21:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:05,485 INFO L225 Difference]: With dead ends: 74 [2020-09-11 23:21:05,486 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:21:05,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:21:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:21:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:21:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:21:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:21:05,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-11 23:21:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:05,487 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:21:05,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:21:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:21:05,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:21:05,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:21:05,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:21:05 BasicIcfg [2020-09-11 23:21:05,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:21:05,496 INFO L168 Benchmark]: Toolchain (without parser) took 4387.41 ms. Allocated memory was 140.5 MB in the beginning and 245.9 MB in the end (delta: 105.4 MB). Free memory was 102.0 MB in the beginning and 193.5 MB in the end (delta: -91.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:05,497 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 23:21:05,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.77 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 158.1 MB in the end (delta: -56.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:05,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.00 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:05,500 INFO L168 Benchmark]: Boogie Preprocessor took 32.44 ms. Allocated memory is still 203.4 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:05,501 INFO L168 Benchmark]: RCFGBuilder took 502.84 ms. Allocated memory is still 203.4 MB. Free memory was 154.1 MB in the beginning and 132.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:05,502 INFO L168 Benchmark]: TraceAbstraction took 3007.15 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 131.3 MB in the beginning and 193.5 MB in the end (delta: -62.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:21:05,507 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.77 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 158.1 MB in the end (delta: -56.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.00 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.44 ms. Allocated memory is still 203.4 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.84 ms. Allocated memory is still 203.4 MB. Free memory was 154.1 MB in the beginning and 132.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3007.15 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 131.3 MB in the beginning and 193.5 MB in the end (delta: -62.2 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: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 84 SDtfs, 65 SDslu, 67 SDs, 0 SdLazy, 28 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...