/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/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:05:47,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:05:47,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:05:47,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:05:47,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:05:47,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:05:47,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:05:47,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:05:47,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:05:47,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:05:47,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:05:47,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:05:47,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:05:47,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:05:47,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:05:47,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:05:47,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:05:47,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:05:47,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:05:47,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:05:47,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:05:47,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:05:47,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:05:47,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:05:47,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:05:47,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:05:47,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:05:47,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:05:47,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:05:47,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:05:47,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:05:47,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:05:47,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:05:47,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:05:47,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:05:47,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:05:47,528 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 [2020-10-06 01:05:47,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:05:47,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:05:47,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:05:47,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:05:47,584 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:05:47,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:05:47,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:05:47,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:05:47,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:05:47,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:05:47,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:05:47,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:05:47,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:05:47,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:05:47,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:05:47,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:05:47,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:05:47,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:05:47,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:05:47,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:05:47,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:05:47,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:05:47,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:05:47,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:05:47,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:05:47,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:05:47,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:05:47,589 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:05:47,589 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:05:47,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:05:47,589 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:05:47,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:05:47,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:05:47,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:05:47,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:05:47,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:05:47,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-06 01:05:48,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abeaab83/8c63a1de51194bfebe0f65b0a6b56382/FLAGecce8046b [2020-10-06 01:05:48,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:05:48,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-06 01:05:48,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abeaab83/8c63a1de51194bfebe0f65b0a6b56382/FLAGecce8046b [2020-10-06 01:05:48,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abeaab83/8c63a1de51194bfebe0f65b0a6b56382 [2020-10-06 01:05:48,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:05:48,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:05:48,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:05:48,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:05:48,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:05:48,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:05:48" (1/1) ... [2020-10-06 01:05:48,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dee3bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:48, skipping insertion in model container [2020-10-06 01:05:48,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:05:48" (1/1) ... [2020-10-06 01:05:48,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:05:48,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:05:49,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:05:49,406 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:05:49,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:05:49,595 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:05:49,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49 WrapperNode [2020-10-06 01:05:49,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:05:49,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:05:49,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:05:49,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:05:49,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:05:49,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:05:49,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:05:49,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:05:49,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (1/1) ... [2020-10-06 01:05:49,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:05:49,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:05:49,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:05:49,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:05:49,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (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 [2020-10-06 01:05:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:05:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:05:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:05:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:05:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:05:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:05:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:05:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:05:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:05:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:05:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:05:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:05:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:05:49,776 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:05:50,157 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:05:50,158 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:05:50,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:05:50 BoogieIcfgContainer [2020-10-06 01:05:50,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:05:50,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:05:50,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:05:50,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:05:50,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:05:48" (1/3) ... [2020-10-06 01:05:50,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635bbc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:05:50, skipping insertion in model container [2020-10-06 01:05:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:05:49" (2/3) ... [2020-10-06 01:05:50,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635bbc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:05:50, skipping insertion in model container [2020-10-06 01:05:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:05:50" (3/3) ... [2020-10-06 01:05:50,170 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-10-06 01:05:50,182 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:05:50,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:05:50,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:05:50,193 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:05:50,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,228 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,228 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,228 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,233 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,246 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:05:50,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:05:50,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:05:50,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:05:50,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:05:50,287 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:05:50,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:05:50,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:05:50,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:05:50,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:05:50,305 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-06 01:05:50,308 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-06 01:05:50,353 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-06 01:05:50,354 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:05:50,359 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 45 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. [2020-10-06 01:05:50,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-06 01:05:50,383 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-06 01:05:50,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:05:50,384 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 45 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. [2020-10-06 01:05:50,386 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-10-06 01:05:50,390 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:05:51,545 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-06 01:05:51,657 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-10-06 01:05:51,657 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-10-06 01:05:51,661 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:05:51,686 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-06 01:05:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-06 01:05:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:05:51,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:05:51,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:05:51,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:05:51,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:05:51,705 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-06 01:05:51,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:05:51,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242020358] [2020-10-06 01:05:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:05:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:05:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:05:51,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242020358] [2020-10-06 01:05:51,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:05:51,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:05:51,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [566284222] [2020-10-06 01:05:51,928 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:05:51,931 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:05:51,945 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:05:51,945 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:05:51,950 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:05:51,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 01:05:51,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:05:51,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 01:05:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:05:51,967 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-06 01:05:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:05:51,987 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-06 01:05:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 01:05:51,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-06 01:05:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:05:52,005 INFO L225 Difference]: With dead ends: 274 [2020-10-06 01:05:52,006 INFO L226 Difference]: Without dead ends: 226 [2020-10-06 01:05:52,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:05:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-06 01:05:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-06 01:05:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-06 01:05:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-06 01:05:52,079 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-06 01:05:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:05:52,081 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-06 01:05:52,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 01:05:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-06 01:05:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:05:52,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:05:52,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:05:52,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:05:52,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:05:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:05:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-06 01:05:52,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:05:52,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174484415] [2020-10-06 01:05:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:05:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:05:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:05:52,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174484415] [2020-10-06 01:05:52,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:05:52,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:05:52,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [785031459] [2020-10-06 01:05:52,224 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:05:52,225 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:05:52,227 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:05:52,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:05:52,228 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:05:52,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:05:52,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:05:52,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:05:52,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:05:52,230 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-06 01:05:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:05:52,267 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-10-06 01:05:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:05:52,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 01:05:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:05:52,271 INFO L225 Difference]: With dead ends: 262 [2020-10-06 01:05:52,271 INFO L226 Difference]: Without dead ends: 214 [2020-10-06 01:05:52,272 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 [2020-10-06 01:05:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-06 01:05:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-06 01:05:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-06 01:05:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-10-06 01:05:52,296 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-10-06 01:05:52,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:05:52,297 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-10-06 01:05:52,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:05:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-10-06 01:05:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:05:52,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:05:52,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:05:52,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:05:52,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:05:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:05:52,300 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-10-06 01:05:52,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:05:52,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204729216] [2020-10-06 01:05:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:05:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:05:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:05:52,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204729216] [2020-10-06 01:05:52,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:05:52,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:05:52,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [174326169] [2020-10-06 01:05:52,405 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:05:52,406 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:05:52,408 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-06 01:05:52,408 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:05:52,450 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:05:52,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:05:52,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:05:52,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:05:52,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:05:52,452 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-10-06 01:05:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:05:52,513 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-10-06 01:05:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:05:52,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-06 01:05:52,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:05:52,517 INFO L225 Difference]: With dead ends: 232 [2020-10-06 01:05:52,517 INFO L226 Difference]: Without dead ends: 196 [2020-10-06 01:05:52,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:05:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-06 01:05:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-06 01:05:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-06 01:05:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-06 01:05:52,534 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-06 01:05:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:05:52,535 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-06 01:05:52,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:05:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-06 01:05:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:05:52,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:05:52,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:05:52,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:05:52,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:05:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:05:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-06 01:05:52,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:05:52,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428313823] [2020-10-06 01:05:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:05:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:05:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:05:52,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428313823] [2020-10-06 01:05:52,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:05:52,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:05:52,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [306629863] [2020-10-06 01:05:52,638 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:05:52,639 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:05:52,641 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-06 01:05:52,641 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:05:52,680 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:05:52,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:05:52,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:05:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:05:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:05:52,681 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-10-06 01:05:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:05:52,805 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-06 01:05:52,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-06 01:05:52,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-06 01:05:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:05:52,808 INFO L225 Difference]: With dead ends: 255 [2020-10-06 01:05:52,808 INFO L226 Difference]: Without dead ends: 150 [2020-10-06 01:05:52,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:05:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-06 01:05:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-06 01:05:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-06 01:05:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-06 01:05:52,827 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-06 01:05:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:05:52,827 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-06 01:05:52,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:05:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-06 01:05:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:05:52,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:05:52,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:05:52,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:05:52,836 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:05:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:05:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-06 01:05:52,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:05:52,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794870414] [2020-10-06 01:05:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:05:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:05:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:05:52,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794870414] [2020-10-06 01:05:52,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:05:52,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:05:52,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1503099310] [2020-10-06 01:05:52,962 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:05:52,964 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:05:52,967 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-10-06 01:05:52,967 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:05:52,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:05:53,025 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:05:53,040 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:05:53,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:05:53,109 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:05:53,137 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:05:53,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:05:53,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:05:53,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:05:53,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:05:53,138 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-06 01:05:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:05:53,165 INFO L93 Difference]: Finished difference Result 106 states and 252 transitions. [2020-10-06 01:05:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:05:53,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:05:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:05:53,166 INFO L225 Difference]: With dead ends: 106 [2020-10-06 01:05:53,166 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:05:53,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:05:53,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:05:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:05:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:05:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:05:53,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-06 01:05:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:05:53,168 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:05:53,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:05:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:05:53,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:05:53,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:05:53,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:05:53 BasicIcfg [2020-10-06 01:05:53,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:05:53,175 INFO L168 Benchmark]: Toolchain (without parser) took 4385.89 ms. Allocated memory was 148.4 MB in the beginning and 244.8 MB in the end (delta: 96.5 MB). Free memory was 102.6 MB in the beginning and 186.5 MB in the end (delta: -83.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:05:53,176 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:05:53,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.53 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 160.2 MB in the end (delta: -57.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:05:53,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.13 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:05:53,178 INFO L168 Benchmark]: Boogie Preprocessor took 34.20 ms. Allocated memory is still 204.5 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:05:53,179 INFO L168 Benchmark]: RCFGBuilder took 450.63 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 134.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:05:53,180 INFO L168 Benchmark]: TraceAbstraction took 3010.32 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 134.3 MB in the beginning and 186.5 MB in the end (delta: -52.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:05:53,184 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 807.53 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 160.2 MB in the end (delta: -57.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 78.13 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.20 ms. Allocated memory is still 204.5 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.63 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 134.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3010.32 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 134.3 MB in the beginning and 186.5 MB in the end (delta: -52.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 91 SDtfs, 107 SDslu, 151 SDs, 0 SdLazy, 93 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...