/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/safe036_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:12:12,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:12:12,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:12:12,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:12:12,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:12:12,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:12:12,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:12:12,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:12:12,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:12:12,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:12:12,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:12:12,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:12:12,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:12:12,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:12:12,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:12:12,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:12:12,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:12:12,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:12:12,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:12:12,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:12:12,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:12:12,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:12:12,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:12:12,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:12:12,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 01:12:12,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:12:12,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:12:12,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:12:12,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:12:12,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:12:12,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:12:12,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:12:12,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:12:12,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:12:12,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:12:12,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:12:12,578 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 [2020-09-16 01:12:12,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:12:12,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:12:12,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:12:12,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:12:12,606 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:12:12,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:12:12,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:12:12,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:12:12,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:12:12,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:12:12,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:12:12,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:12:12,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:12:12,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:12:12,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:12:12,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:12:12,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:12:12,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:12:12,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:12:12,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:12:12,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:12:12,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:12:12,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:12:12,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:12:12,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:12:12,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:12:12,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:12:12,611 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:12:12,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:12:12,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:12:12,612 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:12:13,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:12:13,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:12:13,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:12:13,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:12:13,123 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:12:13,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-09-16 01:12:13,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0160b821b/cad7fa0825e84ac2aa6f6c0f2120197d/FLAG1e903a950 [2020-09-16 01:12:13,889 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:12:13,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-09-16 01:12:13,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0160b821b/cad7fa0825e84ac2aa6f6c0f2120197d/FLAG1e903a950 [2020-09-16 01:12:14,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0160b821b/cad7fa0825e84ac2aa6f6c0f2120197d [2020-09-16 01:12:14,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:12:14,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:12:14,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:12:14,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:12:14,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:12:14,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:14,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67abc2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14, skipping insertion in model container [2020-09-16 01:12:14,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:14,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:12:14,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:12:14,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:12:14,791 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:12:14,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:12:14,962 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:12:14,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14 WrapperNode [2020-09-16 01:12:14,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:12:14,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:12:14,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:12:14,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:12:14,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:14,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:12:15,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:12:15,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:12:15,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:12:15,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (1/1) ... [2020-09-16 01:12:15,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:12:15,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:12:15,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:12:15,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:12:15,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (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 [2020-09-16 01:12:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:12:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 01:12:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:12:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:12:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 01:12:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 01:12:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 01:12:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 01:12:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 01:12:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:12:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:12:15,158 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:12:15,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:12:15,532 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:12:15,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:12:15 BoogieIcfgContainer [2020-09-16 01:12:15,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:12:15,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:12:15,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:12:15,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:12:15,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:12:14" (1/3) ... [2020-09-16 01:12:15,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76366641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:12:15, skipping insertion in model container [2020-09-16 01:12:15,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:12:14" (2/3) ... [2020-09-16 01:12:15,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76366641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:12:15, skipping insertion in model container [2020-09-16 01:12:15,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:12:15" (3/3) ... [2020-09-16 01:12:15,548 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2020-09-16 01:12:15,561 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:12:15,561 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:12:15,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:12:15,572 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:12:15,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,603 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,603 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,603 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,605 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,605 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,606 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,606 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,619 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,619 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,620 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:12:15,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-16 01:12:15,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:12:15,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:12:15,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:12:15,681 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:12:15,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:12:15,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:12:15,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:12:15,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:12:15,700 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-09-16 01:12:15,703 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 01:12:15,757 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 01:12:15,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:12:15,762 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 01:12:15,765 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 01:12:15,784 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 01:12:15,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:12:15,785 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 01:12:15,787 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-16 01:12:15,788 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:12:17,061 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-09-16 01:12:17,061 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-16 01:12:17,066 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-16 01:12:17,086 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-16 01:12:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-16 01:12:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 01:12:17,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:17,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-16 01:12:17,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-09-16 01:12:17,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:17,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812695525] [2020-09-16 01:12:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:17,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812695525] [2020-09-16 01:12:17,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:17,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:12:17,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [977461632] [2020-09-16 01:12:17,438 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:17,442 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:17,460 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-16 01:12:17,460 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:17,463 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:17,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:12:17,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:12:17,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:12:17,486 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-09-16 01:12:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:17,544 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-09-16 01:12:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:12:17,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-09-16 01:12:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:17,559 INFO L225 Difference]: With dead ends: 63 [2020-09-16 01:12:17,559 INFO L226 Difference]: Without dead ends: 40 [2020-09-16 01:12:17,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-16 01:12:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-16 01:12:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-16 01:12:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-09-16 01:12:17,610 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-09-16 01:12:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:17,610 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-09-16 01:12:17,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:12:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-09-16 01:12:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 01:12:17,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:17,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:12:17,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:12:17,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:17,613 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-09-16 01:12:17,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:17,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121671433] [2020-09-16 01:12:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:17,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121671433] [2020-09-16 01:12:17,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:17,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:12:17,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1416672598] [2020-09-16 01:12:17,739 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:17,741 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:17,745 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 01:12:17,745 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:17,745 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:17,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:12:17,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:17,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:12:17,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:17,750 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-09-16 01:12:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:17,806 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-09-16 01:12:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:12:17,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-16 01:12:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:17,808 INFO L225 Difference]: With dead ends: 35 [2020-09-16 01:12:17,808 INFO L226 Difference]: Without dead ends: 28 [2020-09-16 01:12:17,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:12:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-16 01:12:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-16 01:12:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-16 01:12:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-09-16 01:12:17,814 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-09-16 01:12:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:17,814 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-09-16 01:12:17,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:12:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-09-16 01:12:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:12:17,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:17,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:12:17,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:12:17,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:17,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-09-16 01:12:17,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:17,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270480319] [2020-09-16 01:12:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:17,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270480319] [2020-09-16 01:12:17,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:17,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:12:17,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [665466981] [2020-09-16 01:12:17,946 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:17,947 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:17,955 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-09-16 01:12:17,958 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:17,981 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:17,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:12:17,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:12:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:12:17,983 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-09-16 01:12:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:18,001 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-09-16 01:12:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:12:18,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:12:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:18,003 INFO L225 Difference]: With dead ends: 35 [2020-09-16 01:12:18,003 INFO L226 Difference]: Without dead ends: 22 [2020-09-16 01:12:18,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:12:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-16 01:12:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-16 01:12:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-16 01:12:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-16 01:12:18,008 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-09-16 01:12:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:18,009 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-16 01:12:18,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:12:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-16 01:12:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:12:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:12:18,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:12:18,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:12:18,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:12:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:12:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-09-16 01:12:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:12:18,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791219148] [2020-09-16 01:12:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:12:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:12:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:12:18,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791219148] [2020-09-16 01:12:18,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:12:18,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:12:18,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [379634895] [2020-09-16 01:12:18,089 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:12:18,090 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:12:18,093 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-16 01:12:18,093 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:12:18,154 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:12:18,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:12:18,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:12:18,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:12:18,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:12:18,156 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-09-16 01:12:18,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:12:18,169 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-16 01:12:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:12:18,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:12:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:12:18,170 INFO L225 Difference]: With dead ends: 21 [2020-09-16 01:12:18,170 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 01:12:18,171 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 [2020-09-16 01:12:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 01:12:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 01:12:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 01:12:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 01:12:18,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-16 01:12:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:12:18,172 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 01:12:18,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:12:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 01:12:18,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 01:12:18,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 01:12:18,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 01:12:18 BasicIcfg [2020-09-16 01:12:18,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 01:12:18,181 INFO L168 Benchmark]: Toolchain (without parser) took 4043.35 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 101.8 MB in the beginning and 160.0 MB in the end (delta: -58.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:18,182 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 01:12:18,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.53 ms. Allocated memory was 140.0 MB in the beginning and 206.0 MB in the end (delta: 66.1 MB). Free memory was 101.1 MB in the beginning and 163.9 MB in the end (delta: -62.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:18,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.22 ms. Allocated memory is still 206.0 MB. Free memory was 163.9 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:18,185 INFO L168 Benchmark]: Boogie Preprocessor took 34.31 ms. Allocated memory is still 206.0 MB. Free memory was 161.9 MB in the beginning and 160.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:18,186 INFO L168 Benchmark]: RCFGBuilder took 469.84 ms. Allocated memory is still 206.0 MB. Free memory was 160.5 MB in the beginning and 140.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:18,187 INFO L168 Benchmark]: TraceAbstraction took 2637.42 ms. Allocated memory was 206.0 MB in the beginning and 246.4 MB in the end (delta: 40.4 MB). Free memory was 139.8 MB in the beginning and 160.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:18,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.53 ms. Allocated memory was 140.0 MB in the beginning and 206.0 MB in the end (delta: 66.1 MB). Free memory was 101.1 MB in the beginning and 163.9 MB in the end (delta: -62.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.22 ms. Allocated memory is still 206.0 MB. Free memory was 163.9 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.31 ms. Allocated memory is still 206.0 MB. Free memory was 161.9 MB in the beginning and 160.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.84 ms. Allocated memory is still 206.0 MB. Free memory was 160.5 MB in the beginning and 140.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2637.42 ms. Allocated memory was 206.0 MB in the beginning and 246.4 MB in the end (delta: 40.4 MB). Free memory was 139.8 MB in the beginning and 160.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 360 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 56 SDtfs, 43 SDslu, 68 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...