/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:23:19,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:23:19,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:23:19,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:23:19,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:23:19,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:23:19,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:23:19,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:23:19,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:23:19,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:23:19,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:23:19,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:23:19,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:23:19,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:23:19,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:23:19,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:23:19,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:23:19,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:23:19,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:23:19,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:23:19,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:23:19,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:23:19,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:23:19,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:23:19,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:23:19,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:23:19,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:23:19,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:23:19,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:23:19,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:23:19,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:23:19,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:23:19,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:23:19,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:23:19,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:23:19,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:23:19,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:23:19,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:23:19,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:23:19,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:23:19,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:23:19,675 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-VariableLbe.epf [2020-04-18 02:23:19,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:23:19,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:23:19,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:23:19,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:23:19,713 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:23:19,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:23:19,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:23:19,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:23:19,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:23:19,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:23:19,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:23:19,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:23:19,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:23:19,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:23:19,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:23:19,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:23:19,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:23:19,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:23:19,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:23:19,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:23:19,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:23:19,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:23:19,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:23:19,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:23:19,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:23:19,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:23:19,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:23:19,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:23:19,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:23:19,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:23:19,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:23:20,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:23:20,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:23:20,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:23:20,015 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:23:20,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-04-18 02:23:20,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd78d0ae/f5eb81fe289c493baf5b9ce65ff9505c/FLAG34b0161ea [2020-04-18 02:23:20,641 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:23:20,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-04-18 02:23:20,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd78d0ae/f5eb81fe289c493baf5b9ce65ff9505c/FLAG34b0161ea [2020-04-18 02:23:20,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd78d0ae/f5eb81fe289c493baf5b9ce65ff9505c [2020-04-18 02:23:20,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:23:20,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:23:20,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:23:20,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:23:20,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:23:20,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:23:20" (1/1) ... [2020-04-18 02:23:20,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:20, skipping insertion in model container [2020-04-18 02:23:20,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:23:20" (1/1) ... [2020-04-18 02:23:20,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:23:21,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:23:21,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:23:21,553 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:23:21,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:23:21,721 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:23:21,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21 WrapperNode [2020-04-18 02:23:21,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:23:21,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:23:21,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:23:21,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:23:21,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:23:21,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:23:21,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:23:21,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:23:21,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (1/1) ... [2020-04-18 02:23:21,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:23:21,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:23:21,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:23:21,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:23:21,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (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 [2020-04-18 02:23:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:23:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:23:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:23:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:23:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:23:21,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:23:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:23:21,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:23:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:23:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:23:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:23:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:23:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:23:21,884 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:23:22,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:23:22,241 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:23:22,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:23:22 BoogieIcfgContainer [2020-04-18 02:23:22,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:23:22,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:23:22,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:23:22,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:23:22,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:23:20" (1/3) ... [2020-04-18 02:23:22,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa53227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:23:22, skipping insertion in model container [2020-04-18 02:23:22,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:23:21" (2/3) ... [2020-04-18 02:23:22,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa53227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:23:22, skipping insertion in model container [2020-04-18 02:23:22,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:23:22" (3/3) ... [2020-04-18 02:23:22,254 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-04-18 02:23:22,267 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:23:22,267 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:23:22,274 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:23:22,275 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:23:22,300 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,301 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,301 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,301 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,302 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,302 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,303 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,303 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,303 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,304 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,305 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,305 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,305 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,306 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,306 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,306 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,311 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,311 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,311 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,312 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,328 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,330 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,330 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,331 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,333 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,334 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,334 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,334 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:23:22,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:23:22,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:23:22,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:23:22,380 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:23:22,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:23:22,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:23:22,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:23:22,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:23:22,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:23:22,395 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:23:22,397 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:23:22,441 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:23:22,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:23:22,447 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:23:22,450 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:23:22,470 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:23:22,470 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:23:22,471 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:23:22,473 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:23:22,474 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:23:23,971 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 02:23:23,971 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:23:23,976 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:23:24,017 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:23:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:23:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:23:24,032 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:24,033 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:24,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 02:23:24,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:24,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758970015] [2020-04-18 02:23:24,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:24,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758970015] [2020-04-18 02:23:24,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:24,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:23:24,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648673198] [2020-04-18 02:23:24,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:23:24,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:24,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:23:24,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:24,314 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:23:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:24,360 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:23:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:23:24,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:23:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:24,379 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:23:24,379 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:23:24,380 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 [2020-04-18 02:23:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:23:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:23:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:23:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:23:24,449 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:23:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:24,451 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:23:24,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:23:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:23:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:23:24,452 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:24,453 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:24,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:24,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 02:23:24,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:24,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908095088] [2020-04-18 02:23:24,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:24,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908095088] [2020-04-18 02:23:24,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:24,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:23:24,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926251972] [2020-04-18 02:23:24,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:24,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:24,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:24,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:24,569 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:23:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:24,607 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 02:23:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:23:24,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:23:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:24,610 INFO L225 Difference]: With dead ends: 278 [2020-04-18 02:23:24,611 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:23:24,612 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 [2020-04-18 02:23:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:23:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:23:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:23:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 02:23:24,642 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 02:23:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:24,643 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 02:23:24,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 02:23:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:23:24,648 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:24,648 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:24,648 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 02:23:24,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:24,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798128821] [2020-04-18 02:23:24,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:24,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798128821] [2020-04-18 02:23:24,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:24,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:23:24,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683761809] [2020-04-18 02:23:24,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:24,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:24,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:24,712 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-18 02:23:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:24,755 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 02:23:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:23:24,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:23:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:24,757 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:23:24,757 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:23:24,758 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:23:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:23:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:23:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:23:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 02:23:24,786 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 02:23:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:24,787 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 02:23:24,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 02:23:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:23:24,790 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:24,790 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:24,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:24,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 02:23:24,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:24,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032224078] [2020-04-18 02:23:24,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:24,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032224078] [2020-04-18 02:23:24,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:24,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:23:24,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745144159] [2020-04-18 02:23:24,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:23:24,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:23:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:24,886 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-18 02:23:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:24,901 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 02:23:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:23:24,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:23:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:24,904 INFO L225 Difference]: With dead ends: 144 [2020-04-18 02:23:24,905 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:23:24,905 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 [2020-04-18 02:23:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:23:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:23:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:23:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 02:23:24,926 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 02:23:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:24,927 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 02:23:24,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:23:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 02:23:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:23:24,931 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:24,931 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:24,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 02:23:24,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:24,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420824468] [2020-04-18 02:23:24,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:25,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420824468] [2020-04-18 02:23:25,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:23:25,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042186567] [2020-04-18 02:23:25,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:25,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:25,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:25,066 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-18 02:23:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,108 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 02:23:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:23:25,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:23:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,110 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:23:25,110 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:23:25,110 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 [2020-04-18 02:23:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:23:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:23:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:23:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 02:23:25,127 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 02:23:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,128 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 02:23:25,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 02:23:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:23:25,131 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,131 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 02:23:25,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52152344] [2020-04-18 02:23:25,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:25,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52152344] [2020-04-18 02:23:25,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:23:25,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385638913] [2020-04-18 02:23:25,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:23:25,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:23:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:23:25,238 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-18 02:23:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,288 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:23:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:23:25,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:23:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,289 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:23:25,289 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:23:25,290 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 [2020-04-18 02:23:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:23:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:23:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:23:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:23:25,294 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 02:23:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,294 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:23:25,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:23:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:23:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:23:25,295 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,296 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 02:23:25,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114419094] [2020-04-18 02:23:25,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:25,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114419094] [2020-04-18 02:23:25,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:23:25,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845470612] [2020-04-18 02:23:25,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:23:25,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:23:25,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:23:25,328 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-18 02:23:25,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,337 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 02:23:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:23:25,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:23:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,339 INFO L225 Difference]: With dead ends: 115 [2020-04-18 02:23:25,339 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 02:23:25,340 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 [2020-04-18 02:23:25,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 02:23:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 02:23:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 02:23:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 02:23:25,343 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 02:23:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,344 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 02:23:25,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:23:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 02:23:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:23:25,345 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,345 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,345 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,346 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 02:23:25,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940591998] [2020-04-18 02:23:25,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:25,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940591998] [2020-04-18 02:23:25,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:23:25,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988284001] [2020-04-18 02:23:25,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:23:25,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:23:25,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:23:25,390 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-18 02:23:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,409 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-18 02:23:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:23:25,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:23:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,412 INFO L225 Difference]: With dead ends: 114 [2020-04-18 02:23:25,412 INFO L226 Difference]: Without dead ends: 76 [2020-04-18 02:23:25,413 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:23:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-18 02:23:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-18 02:23:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-18 02:23:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-18 02:23:25,417 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-18 02:23:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,417 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-18 02:23:25,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:23:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-18 02:23:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:23:25,418 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:23:25,418 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:23:25,418 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:23:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:23:25,419 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-18 02:23:25,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:23:25,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883290133] [2020-04-18 02:23:25,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:23:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:23:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:23:25,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883290133] [2020-04-18 02:23:25,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:23:25,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:23:25,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056618857] [2020-04-18 02:23:25,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:23:25,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:23:25,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:23:25,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:23:25,484 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-18 02:23:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:23:25,513 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-18 02:23:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:23:25,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:23:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:23:25,514 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:23:25,514 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:23:25,515 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 [2020-04-18 02:23:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:23:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:23:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:23:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:23:25,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 02:23:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:23:25,516 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:23:25,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:23:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:23:25,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:23:25,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:23:25 BasicIcfg [2020-04-18 02:23:25,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:23:25,524 INFO L168 Benchmark]: Toolchain (without parser) took 4594.64 ms. Allocated memory was 136.8 MB in the beginning and 249.6 MB in the end (delta: 112.7 MB). Free memory was 100.2 MB in the beginning and 90.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 122.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,525 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.57 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 157.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.68 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,528 INFO L168 Benchmark]: Boogie Preprocessor took 36.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,528 INFO L168 Benchmark]: RCFGBuilder took 431.24 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 132.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,529 INFO L168 Benchmark]: TraceAbstraction took 3273.89 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 131.6 MB in the beginning and 90.6 MB in the end (delta: 41.0 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:23:25,534 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.57 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 157.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.68 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.24 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 132.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3273.89 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 131.6 MB in the beginning and 90.6 MB in the end (delta: 41.0 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 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, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 2888 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...