/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:04:38,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:04:38,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:04:38,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:04:38,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:04:38,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:04:38,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:04:38,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:04:38,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:04:38,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:04:38,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:04:38,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:04:38,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:04:38,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:04:38,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:04:38,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:04:38,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:04:38,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:04:38,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:04:38,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:04:38,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:04:38,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:04:38,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:04:38,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:04:38,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:04:38,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:04:38,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:04:38,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:04:38,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:04:38,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:04:38,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:04:38,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:04:38,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:04:38,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:04:38,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:04:38,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:04:38,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:04:38,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:04:38,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:04:38,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:04:38,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:04:38,587 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 [2020-09-15 23:04:38,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:04:38,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:04:38,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:04:38,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:04:38,623 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:04:38,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:04:38,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:04:38,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:04:38,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:04:38,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:04:38,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:04:38,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:04:38,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:04:38,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:04:38,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:04:38,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:04:38,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:04:38,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:04:38,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:04:38,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:04:38,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:04:38,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:04:38,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:04:38,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:04:38,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:04:38,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:04:38,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:04:38,630 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:04:38,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:04:38,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:04:38,631 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:04:39,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:04:39,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:04:39,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:04:39,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:04:39,113 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:04:39,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-15 23:04:39,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a16cfa10/4040cc9ebbcf4a40adccb369af8dd247/FLAG481b69770 [2020-09-15 23:04:39,803 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:04:39,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-15 23:04:39,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a16cfa10/4040cc9ebbcf4a40adccb369af8dd247/FLAG481b69770 [2020-09-15 23:04:40,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a16cfa10/4040cc9ebbcf4a40adccb369af8dd247 [2020-09-15 23:04:40,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:04:40,081 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:04:40,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:04:40,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:04:40,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:04:40,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cde918c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40, skipping insertion in model container [2020-09-15 23:04:40,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:04:40,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:04:40,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:04:40,725 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:04:40,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:04:40,864 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:04:40,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40 WrapperNode [2020-09-15 23:04:40,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:04:40,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:04:40,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:04:40,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:04:40,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:04:40,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:04:40,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:04:40,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:04:40,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (1/1) ... [2020-09-15 23:04:40,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:04:40,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:04:40,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:04:40,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:04:40,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (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 [2020-09-15 23:04:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:04:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:04:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:04:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:04:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:04:41,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:04:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:04:41,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:04:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:04:41,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:04:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:04:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:04:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:04:41,060 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:04:41,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:04:41,480 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:04:41,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:04:41 BoogieIcfgContainer [2020-09-15 23:04:41,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:04:41,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:04:41,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:04:41,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:04:41,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:04:40" (1/3) ... [2020-09-15 23:04:41,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f0ae79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:04:41, skipping insertion in model container [2020-09-15 23:04:41,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:04:40" (2/3) ... [2020-09-15 23:04:41,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f0ae79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:04:41, skipping insertion in model container [2020-09-15 23:04:41,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:04:41" (3/3) ... [2020-09-15 23:04:41,496 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-09-15 23:04:41,509 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:04:41,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:04:41,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:04:41,522 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:04:41,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,551 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,552 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,562 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:04:41,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:04:41,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:04:41,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:04:41,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:04:41,633 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:04:41,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:04:41,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:04:41,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:04:41,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:04:41,653 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-15 23:04:41,655 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:04:41,705 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:04:41,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:04:41,712 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. [2020-09-15 23:04:41,714 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:04:41,742 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:04:41,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:04:41,743 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. [2020-09-15 23:04:41,745 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:04:41,747 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:04:43,171 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-15 23:04:43,378 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-15 23:04:43,379 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-15 23:04:43,383 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-15 23:04:43,413 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-15 23:04:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-15 23:04:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:04:43,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:43,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:43,427 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-15 23:04:43,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:43,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152141275] [2020-09-15 23:04:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:43,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152141275] [2020-09-15 23:04:43,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:43,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:04:43,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [384824387] [2020-09-15 23:04:43,724 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:43,728 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:43,745 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:04:43,746 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:43,748 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:04:43,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:04:43,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:43,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:04:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:04:43,771 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-15 23:04:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:43,813 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-09-15 23:04:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:04:43,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:04:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:43,834 INFO L225 Difference]: With dead ends: 266 [2020-09-15 23:04:43,834 INFO L226 Difference]: Without dead ends: 202 [2020-09-15 23:04:43,836 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 [2020-09-15 23:04:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-15 23:04:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-15 23:04:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-15 23:04:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-15 23:04:43,906 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-09-15 23:04:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:43,908 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-15 23:04:43,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:04:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-15 23:04:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:04:43,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:43,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:43,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:04:43,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-09-15 23:04:43,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:43,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491015762] [2020-09-15 23:04:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:44,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491015762] [2020-09-15 23:04:44,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:44,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:04:44,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1237046379] [2020-09-15 23:04:44,034 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:44,035 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:44,038 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-15 23:04:44,041 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:44,079 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:04:44,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:04:44,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:44,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:04:44,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:04:44,085 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-09-15 23:04:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:44,129 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-09-15 23:04:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:04:44,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-15 23:04:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:44,133 INFO L225 Difference]: With dead ends: 254 [2020-09-15 23:04:44,133 INFO L226 Difference]: Without dead ends: 190 [2020-09-15 23:04:44,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:04:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-15 23:04:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-15 23:04:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-15 23:04:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-09-15 23:04:44,152 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-09-15 23:04:44,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:44,152 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-09-15 23:04:44,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:04:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-09-15 23:04:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:04:44,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:44,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:44,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:04:44,155 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-09-15 23:04:44,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:44,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802046065] [2020-09-15 23:04:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:44,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802046065] [2020-09-15 23:04:44,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:44,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:04:44,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [367346238] [2020-09-15 23:04:44,274 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:44,275 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:44,278 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-15 23:04:44,278 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:44,307 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:04:44,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:04:44,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:04:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:04:44,309 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-09-15 23:04:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:44,356 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-09-15 23:04:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:04:44,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 23:04:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:44,358 INFO L225 Difference]: With dead ends: 286 [2020-09-15 23:04:44,358 INFO L226 Difference]: Without dead ends: 178 [2020-09-15 23:04:44,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:04:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-15 23:04:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-09-15 23:04:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-15 23:04:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-09-15 23:04:44,372 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-09-15 23:04:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:44,373 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-09-15 23:04:44,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:04:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-09-15 23:04:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:04:44,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:44,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:44,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:04:44,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:44,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:44,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-09-15 23:04:44,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:44,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821373130] [2020-09-15 23:04:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:44,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821373130] [2020-09-15 23:04:44,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:44,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:04:44,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1238904902] [2020-09-15 23:04:44,434 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:44,435 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:44,438 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-15 23:04:44,438 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:44,467 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:04:44,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:04:44,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:44,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:04:44,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:04:44,468 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-09-15 23:04:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:44,482 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-09-15 23:04:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:04:44,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-15 23:04:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:44,483 INFO L225 Difference]: With dead ends: 174 [2020-09-15 23:04:44,483 INFO L226 Difference]: Without dead ends: 72 [2020-09-15 23:04:44,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:04:44,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-15 23:04:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-15 23:04:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-15 23:04:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-09-15 23:04:44,490 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-09-15 23:04:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:44,490 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-09-15 23:04:44,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:04:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-09-15 23:04:44,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:04:44,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:44,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:44,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:04:44,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:44,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:44,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-09-15 23:04:44,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:44,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764332019] [2020-09-15 23:04:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:44,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764332019] [2020-09-15 23:04:44,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:44,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:04:44,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [320445605] [2020-09-15 23:04:44,626 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:44,631 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:44,637 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-09-15 23:04:44,637 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:44,673 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:04:44,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:04:44,721 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:04:44,738 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:04:44,775 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:04:44,812 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2916#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 23:04:44,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:04:44,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:04:44,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:04:44,813 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 5 states. [2020-09-15 23:04:44,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:44,874 INFO L93 Difference]: Finished difference Result 71 states and 136 transitions. [2020-09-15 23:04:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:04:44,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 23:04:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:44,876 INFO L225 Difference]: With dead ends: 71 [2020-09-15 23:04:44,876 INFO L226 Difference]: Without dead ends: 47 [2020-09-15 23:04:44,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:04:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-15 23:04:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-15 23:04:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-15 23:04:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-09-15 23:04:44,880 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 13 [2020-09-15 23:04:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:44,881 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-09-15 23:04:44,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:04:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-09-15 23:04:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:04:44,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:44,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:44,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:04:44,882 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-09-15 23:04:44,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:44,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978448760] [2020-09-15 23:04:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:44,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978448760] [2020-09-15 23:04:44,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:44,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:04:44,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [13921959] [2020-09-15 23:04:44,980 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:44,981 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:44,986 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-09-15 23:04:44,987 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:45,060 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:04:45,087 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3094#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:04:45,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 23:04:45,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:45,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 23:04:45,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:04:45,088 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-09-15 23:04:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:45,151 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-09-15 23:04:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:04:45,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 23:04:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:45,152 INFO L225 Difference]: With dead ends: 44 [2020-09-15 23:04:45,152 INFO L226 Difference]: Without dead ends: 38 [2020-09-15 23:04:45,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:04:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-15 23:04:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-15 23:04:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-15 23:04:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-09-15 23:04:45,155 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-09-15 23:04:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:45,156 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-09-15 23:04:45,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 23:04:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-09-15 23:04:45,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:04:45,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:04:45,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:04:45,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:04:45,157 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:04:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:04:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-09-15 23:04:45,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:04:45,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568701341] [2020-09-15 23:04:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:04:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:04:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:04:45,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568701341] [2020-09-15 23:04:45,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:04:45,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:04:45,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [147534307] [2020-09-15 23:04:45,221 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:04:45,223 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:04:45,229 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 59 transitions. [2020-09-15 23:04:45,229 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:04:45,273 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:04:45,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:04:45,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:04:45,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:04:45,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:04:45,275 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-09-15 23:04:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:04:45,288 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-09-15 23:04:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:04:45,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:04:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:04:45,289 INFO L225 Difference]: With dead ends: 37 [2020-09-15 23:04:45,289 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:04:45,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:04:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:04:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:04:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:04:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:04:45,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-15 23:04:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:04:45,291 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:04:45,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:04:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:04:45,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:04:45,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:04:45,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:04:45 BasicIcfg [2020-09-15 23:04:45,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:04:45,299 INFO L168 Benchmark]: Toolchain (without parser) took 5223.14 ms. Allocated memory was 146.3 MB in the beginning and 246.9 MB in the end (delta: 100.7 MB). Free memory was 101.0 MB in the beginning and 149.4 MB in the end (delta: -48.4 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,300 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.08 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.86 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,303 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,304 INFO L168 Benchmark]: RCFGBuilder took 523.60 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 133.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,305 INFO L168 Benchmark]: TraceAbstraction took 3809.97 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 133.4 MB in the beginning and 149.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:04:45,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 783.08 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.86 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 523.60 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 133.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3809.97 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 133.4 MB in the beginning and 149.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 140 SDtfs, 100 SDslu, 160 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...