/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:37:17,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:37:17,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:37:17,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:37:17,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:37:17,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:37:17,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:37:17,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:37:17,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:37:17,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:37:17,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:37:17,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:37:17,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:37:17,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:37:17,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:37:17,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:37:17,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:37:17,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:37:17,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:37:17,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:37:17,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:37:17,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:37:17,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:37:17,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:37:17,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:37:17,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:37:17,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:37:17,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:37:17,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:37:17,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:37:17,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:37:17,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:37:17,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:37:17,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:37:17,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:37:17,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:37:17,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:37:17,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:37:17,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:37:17,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:37:17,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:37:17,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:37:17,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:37:17,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:37:17,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:37:17,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:37:17,664 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:37:17,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:37:17,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:37:17,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:37:17,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:37:17,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:37:17,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:37:17,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:37:17,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:37:17,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:37:17,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:37:17,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:37:17,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:37:17,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:37:17,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:37:17,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:37:17,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:37:17,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:37:17,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:37:17,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:37:17,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:37:17,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:37:17,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:37:17,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:37:17,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:37:17,931 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:37:17,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:37:17,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:37:17,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:37:17,951 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:37:17,952 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-17 22:37:18,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aac71d10/e6ad75ade4b0468ea682aade61058375/FLAG4943d842a [2020-04-17 22:37:18,545 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:37:18,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-17 22:37:18,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aac71d10/e6ad75ade4b0468ea682aade61058375/FLAG4943d842a [2020-04-17 22:37:18,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aac71d10/e6ad75ade4b0468ea682aade61058375 [2020-04-17 22:37:18,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:37:18,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:37:18,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:18,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:37:18,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:37:18,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:18" (1/1) ... [2020-04-17 22:37:18,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf7b22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:18, skipping insertion in model container [2020-04-17 22:37:18,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:18" (1/1) ... [2020-04-17 22:37:18,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:37:18,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:37:19,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:19,525 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:37:19,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:19,670 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:37:19,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19 WrapperNode [2020-04-17 22:37:19,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:19,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:19,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:37:19,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:37:19,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:19,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:37:19,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:37:19,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:37:19,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (1/1) ... [2020-04-17 22:37:19,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:37:19,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:37:19,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:37:19,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:37:19,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (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 [2020-04-17 22:37:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:37:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:37:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:37:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:37:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:37:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:37:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:37:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:37:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:37:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:37:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:37:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:37:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:37:19,813 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:37:20,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:37:20,207 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:37:20,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:20 BoogieIcfgContainer [2020-04-17 22:37:20,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:37:20,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:37:20,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:37:20,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:37:20,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:37:18" (1/3) ... [2020-04-17 22:37:20,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1923f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:20, skipping insertion in model container [2020-04-17 22:37:20,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:19" (2/3) ... [2020-04-17 22:37:20,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1923f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:20, skipping insertion in model container [2020-04-17 22:37:20,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:20" (3/3) ... [2020-04-17 22:37:20,221 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-04-17 22:37:20,232 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:37:20,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:37:20,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:37:20,240 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:37:20,265 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,265 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,266 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,266 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,267 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,267 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,267 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,268 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,268 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,268 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,269 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,269 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,269 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,270 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,270 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,270 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,270 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,271 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,275 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,275 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,275 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,276 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,282 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,282 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,283 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,283 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,285 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,285 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,286 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,286 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:20,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:37:20,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:37:20,323 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:37:20,323 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:37:20,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:37:20,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:37:20,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:37:20,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:37:20,324 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:37:20,339 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:20,341 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:20,384 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:37:20,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:20,395 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:37:20,398 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:20,429 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:37:20,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:20,430 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:37:20,432 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:37:20,433 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:37:22,065 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 22:37:22,254 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-17 22:37:22,392 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-17 22:37:22,392 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-17 22:37:22,396 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 22:37:22,433 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:37:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:37:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:37:22,445 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:22,446 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:22,447 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-17 22:37:22,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:22,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095060225] [2020-04-17 22:37:22,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:22,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095060225] [2020-04-17 22:37:22,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:22,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:37:22,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671227411] [2020-04-17 22:37:22,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:22,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:22,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:22,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:22,744 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:37:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:22,796 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-17 22:37:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:22,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:37:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:22,827 INFO L225 Difference]: With dead ends: 294 [2020-04-17 22:37:22,827 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 22:37:22,831 INFO L678 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 [2020-04-17 22:37:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 22:37:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 22:37:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 22:37:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-17 22:37:22,934 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-17 22:37:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:22,935 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-17 22:37:22,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-17 22:37:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:37:22,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:22,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:22,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-17 22:37:22,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:22,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853953360] [2020-04-17 22:37:22,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853953360] [2020-04-17 22:37:23,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:37:23,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657178479] [2020-04-17 22:37:23,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:23,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:23,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:23,044 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-17 22:37:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,056 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 22:37:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:23,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:37:23,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,064 INFO L225 Difference]: With dead ends: 202 [2020-04-17 22:37:23,064 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 22:37:23,065 INFO L678 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 [2020-04-17 22:37:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 22:37:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 22:37:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 22:37:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 22:37:23,088 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 22:37:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,089 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 22:37:23,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 22:37:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:37:23,093 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:23,093 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:23,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:23,094 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-17 22:37:23,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:23,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807752797] [2020-04-17 22:37:23,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807752797] [2020-04-17 22:37:23,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:23,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059056779] [2020-04-17 22:37:23,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:23,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:23,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:23,189 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 22:37:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,205 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-17 22:37:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:23,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:37:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,207 INFO L225 Difference]: With dead ends: 266 [2020-04-17 22:37:23,207 INFO L226 Difference]: Without dead ends: 140 [2020-04-17 22:37:23,208 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-17 22:37:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-17 22:37:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-17 22:37:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-17 22:37:23,216 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-17 22:37:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,216 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-17 22:37:23,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-17 22:37:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:37:23,218 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:23,218 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:23,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-17 22:37:23,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:23,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613006844] [2020-04-17 22:37:23,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613006844] [2020-04-17 22:37:23,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:23,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096590472] [2020-04-17 22:37:23,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:23,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:23,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:23,291 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-04-17 22:37:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,332 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-17 22:37:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:37:23,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:37:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,334 INFO L225 Difference]: With dead ends: 165 [2020-04-17 22:37:23,334 INFO L226 Difference]: Without dead ends: 113 [2020-04-17 22:37:23,335 INFO L678 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 [2020-04-17 22:37:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-17 22:37:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-17 22:37:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-17 22:37:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-17 22:37:23,340 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-17 22:37:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,341 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-17 22:37:23,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-17 22:37:23,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:37:23,342 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:23,342 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:23,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-17 22:37:23,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:23,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022391215] [2020-04-17 22:37:23,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022391215] [2020-04-17 22:37:23,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:23,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840633267] [2020-04-17 22:37:23,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:37:23,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:37:23,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:37:23,429 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-04-17 22:37:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,474 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-17 22:37:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:37:23,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:37:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,475 INFO L225 Difference]: With dead ends: 111 [2020-04-17 22:37:23,475 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 22:37:23,475 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:37:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 22:37:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 22:37:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 22:37:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-17 22:37:23,479 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-17 22:37:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,479 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-17 22:37:23,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:37:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-17 22:37:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:37:23,480 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:23,481 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:23,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:23,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-17 22:37:23,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:23,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747894649] [2020-04-17 22:37:23,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747894649] [2020-04-17 22:37:23,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:37:23,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326312536] [2020-04-17 22:37:23,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:37:23,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:37:23,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:37:23,546 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-04-17 22:37:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,598 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-17 22:37:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:37:23,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:37:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,599 INFO L225 Difference]: With dead ends: 75 [2020-04-17 22:37:23,599 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 22:37:23,600 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:37:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 22:37:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-17 22:37:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-17 22:37:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-17 22:37:23,604 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-17 22:37:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,605 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-17 22:37:23,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:37:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-17 22:37:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:37:23,606 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:23,606 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:23,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:23,607 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-17 22:37:23,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:23,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445385943] [2020-04-17 22:37:23,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445385943] [2020-04-17 22:37:23,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:23,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062670667] [2020-04-17 22:37:23,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:23,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:23,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:23,674 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-04-17 22:37:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,709 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-04-17 22:37:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:23,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:37:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,711 INFO L225 Difference]: With dead ends: 85 [2020-04-17 22:37:23,711 INFO L226 Difference]: Without dead ends: 48 [2020-04-17 22:37:23,711 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-04-17 22:37:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-04-17 22:37:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-04-17 22:37:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-04-17 22:37:23,714 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-04-17 22:37:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,714 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-04-17 22:37:23,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-04-17 22:37:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:37:23,716 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:23,717 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:23,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-04-17 22:37:23,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:23,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268803360] [2020-04-17 22:37:23,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:23,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268803360] [2020-04-17 22:37:23,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:23,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:23,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268241626] [2020-04-17 22:37:23,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:23,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:23,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:23,791 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-04-17 22:37:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:23,805 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-04-17 22:37:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:23,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:37:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:23,807 INFO L225 Difference]: With dead ends: 47 [2020-04-17 22:37:23,807 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:37:23,807 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:37:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:37:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:37:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:37:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:37:23,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:37:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:23,809 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:37:23,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:37:23,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:37:23,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:37:23 BasicIcfg [2020-04-17 22:37:23,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:37:23,817 INFO L168 Benchmark]: Toolchain (without parser) took 4923.91 ms. Allocated memory was 137.9 MB in the beginning and 249.0 MB in the end (delta: 111.1 MB). Free memory was 101.7 MB in the beginning and 167.4 MB in the end (delta: -65.7 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,818 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.41 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.7 MB in the beginning and 158.2 MB in the end (delta: -58.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.53 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,820 INFO L168 Benchmark]: Boogie Preprocessor took 25.66 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,821 INFO L168 Benchmark]: RCFGBuilder took 462.12 ms. Allocated memory is still 201.9 MB. Free memory was 154.2 MB in the beginning and 132.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,822 INFO L168 Benchmark]: TraceAbstraction took 3601.74 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.0 MB in the beginning and 167.4 MB in the end (delta: -35.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:23,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 762.41 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.7 MB in the beginning and 158.2 MB in the end (delta: -58.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.53 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.66 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.12 ms. Allocated memory is still 201.9 MB. Free memory was 154.2 MB in the beginning and 132.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3601.74 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.0 MB in the beginning and 167.4 MB in the end (delta: -35.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 156 SDtfs, 124 SDslu, 170 SDs, 0 SdLazy, 107 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2796 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...