/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:30:58,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:30:58,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:30:58,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:30:58,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:30:58,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:30:58,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:30:58,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:30:58,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:30:58,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:30:58,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:30:58,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:30:58,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:30:58,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:30:58,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:30:58,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:30:58,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:30:58,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:30:58,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:30:58,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:30:58,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:30:58,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:30:58,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:30:58,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:30:58,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 00:30:58,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:30:58,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:30:58,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:30:58,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:30:58,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:30:58,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:30:58,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:30:58,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:30:58,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:30:58,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:30:58,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:30:58,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 00:30:58,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:30:58,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:30:58,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:30:58,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:30:58,723 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:30:58,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:30:58,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:30:58,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:30:58,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:30:58,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:30:58,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:30:58,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:30:58,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:30:58,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:30:58,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:30:58,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:30:58,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:30:58,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:30:58,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:30:58,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:30:58,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:30:58,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:30:58,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:30:58,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:30:58,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:30:58,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:30:58,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:30:58,728 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:30:58,728 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:30:58,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:30:58,728 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:30:59,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:30:59,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:30:59,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:30:59,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:30:59,234 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:30:59,235 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-09-18 00:30:59,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/916344ffa/52d9db66b6204e728a96404ebabfdb7c/FLAG241bbec88 [2020-09-18 00:30:59,977 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:30:59,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-09-18 00:30:59,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/916344ffa/52d9db66b6204e728a96404ebabfdb7c/FLAG241bbec88 [2020-09-18 00:31:00,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/916344ffa/52d9db66b6204e728a96404ebabfdb7c [2020-09-18 00:31:00,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:31:00,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:31:00,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:31:00,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:31:00,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:31:00,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:31:00" (1/1) ... [2020-09-18 00:31:00,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a023d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:00, skipping insertion in model container [2020-09-18 00:31:00,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:31:00" (1/1) ... [2020-09-18 00:31:00,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:31:00,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:31:00,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:31:00,918 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:31:00,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:31:01,063 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:31:01,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01 WrapperNode [2020-09-18 00:31:01,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:31:01,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:31:01,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:31:01,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:31:01,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:31:01,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:31:01,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:31:01,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:31:01,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... [2020-09-18 00:31:01,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:31:01,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:31:01,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:31:01,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:31:01,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:31:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:31:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:31:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:31:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:31:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:31:01,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:31:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:31:01,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:31:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:31:01,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:31:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:31:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:31:01,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:31:01,246 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:31:01,595 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:31:01,595 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:31:01,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:31:01 BoogieIcfgContainer [2020-09-18 00:31:01,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:31:01,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:31:01,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:31:01,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:31:01,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:31:00" (1/3) ... [2020-09-18 00:31:01,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7445681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:31:01, skipping insertion in model container [2020-09-18 00:31:01,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:31:01" (2/3) ... [2020-09-18 00:31:01,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7445681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:31:01, skipping insertion in model container [2020-09-18 00:31:01,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:31:01" (3/3) ... [2020-09-18 00:31:01,611 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-09-18 00:31:01,623 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:31:01,623 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:31:01,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:31:01,636 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:31:01,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,671 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,671 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,672 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,672 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,672 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,672 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,673 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,707 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:31:01,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:31:01,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:31:01,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:31:01,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:31:01,762 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:31:01,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:31:01,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:31:01,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:31:01,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:31:01,781 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-18 00:31:01,784 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-18 00:31:01,836 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-18 00:31:01,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:31:01,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-18 00:31:01,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-18 00:31:01,869 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-18 00:31:01,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:31:01,870 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-18 00:31:01,872 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-18 00:31:01,874 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:31:03,442 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-09-18 00:31:03,478 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-18 00:31:03,479 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-18 00:31:03,483 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-18 00:31:03,506 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-18 00:31:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-18 00:31:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:31:03,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:03,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:03,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:03,528 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-18 00:31:03,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:03,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873455645] [2020-09-18 00:31:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:03,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873455645] [2020-09-18 00:31:03,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:03,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:31:03,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1743029247] [2020-09-18 00:31:03,851 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:03,855 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:03,871 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:31:03,872 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:03,874 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:31:03,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:31:03,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:03,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:31:03,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:03,896 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-18 00:31:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:03,932 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-18 00:31:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:31:03,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:31:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:03,952 INFO L225 Difference]: With dead ends: 222 [2020-09-18 00:31:03,952 INFO L226 Difference]: Without dead ends: 174 [2020-09-18 00:31:03,954 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 [2020-09-18 00:31:03,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-18 00:31:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-18 00:31:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-18 00:31:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-18 00:31:04,025 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-18 00:31:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:04,027 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-18 00:31:04,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:31:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-18 00:31:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:31:04,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:04,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:04,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:31:04,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:04,030 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-09-18 00:31:04,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:04,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050506934] [2020-09-18 00:31:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:04,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050506934] [2020-09-18 00:31:04,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:04,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:31:04,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [395160042] [2020-09-18 00:31:04,151 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:04,153 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:04,159 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 00:31:04,159 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:04,225 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:31:04,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:31:04,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:04,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:31:04,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:04,233 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 3 states. [2020-09-18 00:31:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:04,253 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-09-18 00:31:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:31:04,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 00:31:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:04,256 INFO L225 Difference]: With dead ends: 168 [2020-09-18 00:31:04,256 INFO L226 Difference]: Without dead ends: 168 [2020-09-18 00:31:04,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-18 00:31:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-09-18 00:31:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-18 00:31:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-09-18 00:31:04,279 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-09-18 00:31:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:04,279 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-09-18 00:31:04,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:31:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-09-18 00:31:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:31:04,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:04,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:04,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:31:04,281 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:04,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:04,282 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-09-18 00:31:04,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:04,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078192841] [2020-09-18 00:31:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:04,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078192841] [2020-09-18 00:31:04,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:04,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:31:04,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [283143005] [2020-09-18 00:31:04,367 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:04,368 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:04,370 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-18 00:31:04,370 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:04,421 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:31:04,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:31:04,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:31:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:04,422 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 3 states. [2020-09-18 00:31:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:04,429 INFO L93 Difference]: Finished difference Result 162 states and 422 transitions. [2020-09-18 00:31:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:31:04,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 00:31:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:04,432 INFO L225 Difference]: With dead ends: 162 [2020-09-18 00:31:04,432 INFO L226 Difference]: Without dead ends: 162 [2020-09-18 00:31:04,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-18 00:31:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-18 00:31:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-18 00:31:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 422 transitions. [2020-09-18 00:31:04,447 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 422 transitions. Word has length 10 [2020-09-18 00:31:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:04,448 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 422 transitions. [2020-09-18 00:31:04,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:31:04,448 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 422 transitions. [2020-09-18 00:31:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:31:04,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:04,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:04,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:31:04,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash -760979570, now seen corresponding path program 1 times [2020-09-18 00:31:04,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:04,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319954472] [2020-09-18 00:31:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:04,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319954472] [2020-09-18 00:31:04,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:04,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:31:04,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1931682233] [2020-09-18 00:31:04,541 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:04,542 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:04,545 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-09-18 00:31:04,545 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:04,651 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:31:04,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:31:04,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:04,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:31:04,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:31:04,653 INFO L87 Difference]: Start difference. First operand 162 states and 422 transitions. Second operand 4 states. [2020-09-18 00:31:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:04,679 INFO L93 Difference]: Finished difference Result 234 states and 596 transitions. [2020-09-18 00:31:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:31:04,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:31:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:04,699 INFO L225 Difference]: With dead ends: 234 [2020-09-18 00:31:04,702 INFO L226 Difference]: Without dead ends: 132 [2020-09-18 00:31:04,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:31:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-18 00:31:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-18 00:31:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-18 00:31:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-09-18 00:31:04,719 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 11 [2020-09-18 00:31:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:04,719 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-09-18 00:31:04,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:31:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-09-18 00:31:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:31:04,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:04,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:04,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:31:04,721 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:04,722 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 2 times [2020-09-18 00:31:04,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:04,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504326001] [2020-09-18 00:31:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:04,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504326001] [2020-09-18 00:31:04,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:04,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:31:04,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [976156485] [2020-09-18 00:31:04,779 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:04,781 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:04,783 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-09-18 00:31:04,784 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:04,822 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:31:04,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:31:04,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:31:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:31:04,823 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-09-18 00:31:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:04,842 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-09-18 00:31:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:31:04,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:31:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:04,844 INFO L225 Difference]: With dead ends: 144 [2020-09-18 00:31:04,844 INFO L226 Difference]: Without dead ends: 60 [2020-09-18 00:31:04,844 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 [2020-09-18 00:31:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-18 00:31:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-18 00:31:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-18 00:31:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-18 00:31:04,849 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-09-18 00:31:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:04,850 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-18 00:31:04,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:31:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-18 00:31:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:31:04,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:04,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:04,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:31:04,852 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:04,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-09-18 00:31:04,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:04,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635940521] [2020-09-18 00:31:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:04,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635940521] [2020-09-18 00:31:04,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:04,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:31:04,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1295845955] [2020-09-18 00:31:04,958 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:04,963 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:04,966 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-09-18 00:31:04,966 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:05,015 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:31:05,051 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:31:05,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:31:05,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:31:05,110 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2894#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-18 00:31:05,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 00:31:05,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:05,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 00:31:05,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:31:05,112 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-09-18 00:31:05,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:05,185 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-09-18 00:31:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:31:05,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-18 00:31:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:05,186 INFO L225 Difference]: With dead ends: 59 [2020-09-18 00:31:05,186 INFO L226 Difference]: Without dead ends: 38 [2020-09-18 00:31:05,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:31:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-18 00:31:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-18 00:31:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-18 00:31:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-18 00:31:05,190 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-09-18 00:31:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:05,190 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-18 00:31:05,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 00:31:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-18 00:31:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 00:31:05,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:05,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:05,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:31:05,195 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:05,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-18 00:31:05,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:05,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321743240] [2020-09-18 00:31:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:05,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321743240] [2020-09-18 00:31:05,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:05,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:31:05,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [714609209] [2020-09-18 00:31:05,315 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:05,317 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:05,320 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-09-18 00:31:05,320 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:05,327 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:31:05,364 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [3040#(not (= 3 ~__unbuffered_cnt~0)), 3041#(not (= ~__unbuffered_cnt~0 2)), 3042#(not (= ~__unbuffered_cnt~0 1))] [2020-09-18 00:31:05,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-18 00:31:05,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:05,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-18 00:31:05,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-18 00:31:05,366 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-09-18 00:31:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:05,425 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-18 00:31:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:31:05,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-09-18 00:31:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:05,427 INFO L225 Difference]: With dead ends: 35 [2020-09-18 00:31:05,427 INFO L226 Difference]: Without dead ends: 29 [2020-09-18 00:31:05,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-18 00:31:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-18 00:31:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-18 00:31:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-18 00:31:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-18 00:31:05,430 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-18 00:31:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:05,430 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-18 00:31:05,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-18 00:31:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-18 00:31:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 00:31:05,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:31:05,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:31:05,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:31:05,432 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:31:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:31:05,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-18 00:31:05,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:31:05,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026354728] [2020-09-18 00:31:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:31:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:31:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:31:05,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026354728] [2020-09-18 00:31:05,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:31:05,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:31:05,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1159717599] [2020-09-18 00:31:05,477 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:31:05,478 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:31:05,481 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-09-18 00:31:05,481 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:31:05,486 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:31:05,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:31:05,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:31:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:31:05,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:05,488 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-18 00:31:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:31:05,494 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-18 00:31:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:31:05,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-18 00:31:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:31:05,495 INFO L225 Difference]: With dead ends: 28 [2020-09-18 00:31:05,496 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:31:05,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:31:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:31:05,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:31:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:31:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:31:05,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-18 00:31:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:31:05,498 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:31:05,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:31:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:31:05,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:31:05,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 00:31:05,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:31:05 BasicIcfg [2020-09-18 00:31:05,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:31:05,506 INFO L168 Benchmark]: Toolchain (without parser) took 5223.43 ms. Allocated memory was 142.6 MB in the beginning and 245.4 MB in the end (delta: 102.8 MB). Free memory was 102.4 MB in the beginning and 124.4 MB in the end (delta: -22.0 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,507 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.84 ms. Allocated memory was 142.6 MB in the beginning and 206.6 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 164.6 MB in the end (delta: -62.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.66 ms. Allocated memory is still 206.6 MB. Free memory was 164.6 MB in the beginning and 162.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,509 INFO L168 Benchmark]: Boogie Preprocessor took 30.00 ms. Allocated memory is still 206.6 MB. Free memory was 162.1 MB in the beginning and 160.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,510 INFO L168 Benchmark]: RCFGBuilder took 438.74 ms. Allocated memory is still 206.6 MB. Free memory was 160.2 MB in the beginning and 138.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,511 INFO L168 Benchmark]: TraceAbstraction took 3901.04 ms. Allocated memory was 206.6 MB in the beginning and 245.4 MB in the end (delta: 38.8 MB). Free memory was 138.3 MB in the beginning and 124.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:31:05,516 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 777.84 ms. Allocated memory was 142.6 MB in the beginning and 206.6 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 164.6 MB in the end (delta: -62.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.66 ms. Allocated memory is still 206.6 MB. Free memory was 164.6 MB in the beginning and 162.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.00 ms. Allocated memory is still 206.6 MB. Free memory was 162.1 MB in the beginning and 160.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.74 ms. Allocated memory is still 206.6 MB. Free memory was 160.2 MB in the beginning and 138.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3901.04 ms. Allocated memory was 206.6 MB in the beginning and 245.4 MB in the end (delta: 38.8 MB). Free memory was 138.3 MB in the beginning and 124.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 125 SDtfs, 109 SDslu, 121 SDs, 0 SdLazy, 85 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...