/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:07:19,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:07:19,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:07:19,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:07:19,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:07:19,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:07:19,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:07:19,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:07:19,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:07:19,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:07:19,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:07:19,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:07:19,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:07:19,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:07:19,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:07:19,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:07:19,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:07:19,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:07:19,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:07:19,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:07:19,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:07:19,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:07:19,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:07:19,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:07:19,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:07:19,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:07:19,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:07:19,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:07:19,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:07:19,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:07:19,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:07:19,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:07:19,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:07:19,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:07:19,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:07:19,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:07:19,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:07:19,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:07:19,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:07:19,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:07:19,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:07:19,631 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 02:07:19,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:07:19,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:07:19,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:07:19,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:07:19,662 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:07:19,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:07:19,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:07:19,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:07:19,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:07:19,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:07:19,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:07:19,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:07:19,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:07:19,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:07:19,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:07:19,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:07:19,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:07:19,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:07:19,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:07:19,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:07:19,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:07:19,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:07:19,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:07:19,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:07:19,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:07:19,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:07:19,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:07:19,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:07:19,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:07:19,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:07:19,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:07:19,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:07:19,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:07:19,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:07:19,958 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:07:19,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-04-18 02:07:20,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a7831dc/d4d5421e998d4ea1a28984281306e8dc/FLAG097b36453 [2020-04-18 02:07:20,527 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:07:20,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-04-18 02:07:20,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a7831dc/d4d5421e998d4ea1a28984281306e8dc/FLAG097b36453 [2020-04-18 02:07:20,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a7831dc/d4d5421e998d4ea1a28984281306e8dc [2020-04-18 02:07:20,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:07:20,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:07:20,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:07:20,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:07:20,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:07:20,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:07:20" (1/1) ... [2020-04-18 02:07:20,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8a3bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:20, skipping insertion in model container [2020-04-18 02:07:20,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:07:20" (1/1) ... [2020-04-18 02:07:20,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:07:20,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:07:21,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:07:21,479 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:07:21,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:07:21,635 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:07:21,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21 WrapperNode [2020-04-18 02:07:21,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:07:21,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:07:21,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:07:21,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:07:21,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:07:21,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:07:21,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:07:21,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:07:21,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (1/1) ... [2020-04-18 02:07:21,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:07:21,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:07:21,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:07:21,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:07:21,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (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 02:07:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:07:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:07:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:07:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:07:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:07:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:07:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:07:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:07:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:07:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:07:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:07:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:07:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:07:21,783 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 02:07:22,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:07:22,188 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:07:22,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:07:22 BoogieIcfgContainer [2020-04-18 02:07:22,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:07:22,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:07:22,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:07:22,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:07:22,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:07:20" (1/3) ... [2020-04-18 02:07:22,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ade6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:07:22, skipping insertion in model container [2020-04-18 02:07:22,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:21" (2/3) ... [2020-04-18 02:07:22,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ade6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:07:22, skipping insertion in model container [2020-04-18 02:07:22,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:07:22" (3/3) ... [2020-04-18 02:07:22,202 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-04-18 02:07:22,211 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:07:22,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:07:22,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:07:22,218 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:07:22,241 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,242 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,242 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,243 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,243 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,243 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,244 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,244 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,244 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,245 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,245 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,245 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,246 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,246 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,246 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,246 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,247 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,247 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,252 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,252 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,252 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,253 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,259 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,259 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,260 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,260 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,263 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,263 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,263 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,263 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:22,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:07:22,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:07:22,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:07:22,305 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:07:22,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:07:22,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:07:22,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:07:22,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:07:22,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:07:22,322 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:07:22,324 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:07:22,367 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:07:22,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:07:22,372 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 54 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 02:07:22,375 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:07:22,395 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:07:22,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:07:22,397 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 54 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 02:07:22,399 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:07:22,400 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:07:23,851 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:07:24,011 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 02:07:24,011 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:07:24,015 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:07:24,040 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:07:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:07:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:07:24,050 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:24,051 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:24,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 02:07:24,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:24,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265779532] [2020-04-18 02:07:24,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:24,280 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 02:07:24,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265779532] [2020-04-18 02:07:24,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:24,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:07:24,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074943530] [2020-04-18 02:07:24,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:07:24,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:07:24,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:07:24,307 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:07:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:24,350 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:07:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:07:24,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:07:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:24,368 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:07:24,368 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:07:24,369 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 02:07:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:07:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:07:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:07:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:07:24,472 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:07:24,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:24,474 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:07:24,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:07:24,474 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:07:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:07:24,477 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:24,477 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:24,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 02:07:24,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:24,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042726689] [2020-04-18 02:07:24,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:24,611 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 02:07:24,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042726689] [2020-04-18 02:07:24,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:24,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:24,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963834520] [2020-04-18 02:07:24,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:07:24,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:24,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:07:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:07:24,615 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 02:07:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:24,646 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 02:07:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:07:24,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:07:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:24,649 INFO L225 Difference]: With dead ends: 254 [2020-04-18 02:07:24,650 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 02:07:24,650 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 02:07:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 02:07:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 02:07:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 02:07:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 02:07:24,668 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 02:07:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:24,669 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 02:07:24,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:07:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 02:07:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:07:24,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:24,671 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:24,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:24,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-18 02:07:24,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:24,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510150408] [2020-04-18 02:07:24,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:24,747 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 02:07:24,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510150408] [2020-04-18 02:07:24,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:24,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:07:24,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255033221] [2020-04-18 02:07:24,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:07:24,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:07:24,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:07:24,750 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-18 02:07:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:24,783 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-04-18 02:07:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:07:24,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:07:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:24,785 INFO L225 Difference]: With dead ends: 286 [2020-04-18 02:07:24,785 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 02:07:24,786 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 02:07:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 02:07:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-04-18 02:07:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 02:07:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-04-18 02:07:24,798 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-04-18 02:07:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:24,798 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-04-18 02:07:24,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:07:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 02:07:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:07:24,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:24,800 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:24,800 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:24,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-18 02:07:24,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:24,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673979337] [2020-04-18 02:07:24,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:24,839 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 02:07:24,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673979337] [2020-04-18 02:07:24,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:24,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:24,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394322978] [2020-04-18 02:07:24,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:07:24,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:24,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:07:24,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:07:24,842 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-18 02:07:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:24,854 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-04-18 02:07:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:07:24,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:07:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:24,855 INFO L225 Difference]: With dead ends: 174 [2020-04-18 02:07:24,855 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 02:07:24,856 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 02:07:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 02:07:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 02:07:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 02:07:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 02:07:24,862 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 02:07:24,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:24,862 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 02:07:24,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:07:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 02:07:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:07:24,863 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:24,863 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:24,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-04-18 02:07:24,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:24,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996787218] [2020-04-18 02:07:24,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:24,953 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 02:07:24,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996787218] [2020-04-18 02:07:24,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:24,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:24,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037865150] [2020-04-18 02:07:24,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:07:24,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:24,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:07:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:07:24,960 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-18 02:07:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:25,001 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 02:07:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:07:25,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:07:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:25,002 INFO L225 Difference]: With dead ends: 85 [2020-04-18 02:07:25,002 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 02:07:25,003 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 02:07:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 02:07:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 02:07:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 02:07:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 02:07:25,014 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 02:07:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:25,015 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 02:07:25,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:07:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 02:07:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:07:25,019 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:25,019 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:25,020 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:25,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 02:07:25,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:25,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890807300] [2020-04-18 02:07:25,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:25,105 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 02:07:25,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890807300] [2020-04-18 02:07:25,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:25,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:07:25,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742094053] [2020-04-18 02:07:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:07:25,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:25,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:07:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:07:25,108 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-18 02:07:25,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:25,163 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 02:07:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:07:25,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:07:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:25,164 INFO L225 Difference]: With dead ends: 62 [2020-04-18 02:07:25,165 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 02:07:25,165 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 02:07:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 02:07:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 02:07:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 02:07:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 02:07:25,169 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 02:07:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:25,170 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 02:07:25,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:07:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 02:07:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:07:25,172 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:25,172 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:25,172 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:25,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 02:07:25,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:25,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675812530] [2020-04-18 02:07:25,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:25,312 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 02:07:25,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675812530] [2020-04-18 02:07:25,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:25,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:07:25,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889130481] [2020-04-18 02:07:25,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:07:25,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:07:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:07:25,315 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-18 02:07:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:25,376 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 02:07:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:07:25,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:07:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:25,379 INFO L225 Difference]: With dead ends: 44 [2020-04-18 02:07:25,379 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 02:07:25,379 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 02:07:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 02:07:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 02:07:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 02:07:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 02:07:25,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 02:07:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:25,383 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 02:07:25,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:07:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 02:07:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:07:25,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:25,385 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:25,385 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:25,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-18 02:07:25,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:25,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177906443] [2020-04-18 02:07:25,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:25,413 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 02:07:25,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177906443] [2020-04-18 02:07:25,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:25,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:25,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224151040] [2020-04-18 02:07:25,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:07:25,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:25,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:07:25,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:07:25,416 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 3 states. [2020-04-18 02:07:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:25,420 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 02:07:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:07:25,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-18 02:07:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:25,421 INFO L225 Difference]: With dead ends: 37 [2020-04-18 02:07:25,421 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:07:25,421 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 02:07:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:07:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:07:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:07:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:07:25,422 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:07:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:25,423 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:07:25,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:07:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:07:25,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:07:25,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:07:25 BasicIcfg [2020-04-18 02:07:25,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:07:25,429 INFO L168 Benchmark]: Toolchain (without parser) took 4537.72 ms. Allocated memory was 139.5 MB in the beginning and 245.4 MB in the end (delta: 105.9 MB). Free memory was 102.6 MB in the beginning and 193.3 MB in the end (delta: -90.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:25,429 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:07:25,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.38 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 158.0 MB in the end (delta: -57.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:25,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.37 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:25,432 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:25,433 INFO L168 Benchmark]: RCFGBuilder took 478.57 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 132.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:25,434 INFO L168 Benchmark]: TraceAbstraction took 3233.49 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 132.0 MB in the beginning and 193.3 MB in the end (delta: -61.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:07:25,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.38 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 158.0 MB in the end (delta: -57.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.37 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.57 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 132.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3233.49 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 132.0 MB in the beginning and 193.3 MB in the end (delta: -61.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 155 SDtfs, 112 SDslu, 167 SDs, 0 SdLazy, 114 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 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, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3270 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...