/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:07:45,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:07:45,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:07:45,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:07:45,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:07:45,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:07:45,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:07:45,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:07:45,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:07:45,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:07:45,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:07:45,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:07:45,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:07:45,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:07:45,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:07:45,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:07:45,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:07:45,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:07:45,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:07:45,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:07:45,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:07:45,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:07:45,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:07:45,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:07:45,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 02:07:45,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 02:07:45,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 02:07:45,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 02:07:45,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 02:07:45,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 02:07:45,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:07:45,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:07:45,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:07:45,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:07:45,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:07:45,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:07:45,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:07:45,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:07:45,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:07:45,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:07:45,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:07:45,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:07:45,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:07:45,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:07:45,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:07:45,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:07:45,803 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:07:45,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:07:45,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:07:45,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:07:45,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:07:45,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:07:45,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:07:45,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:07:45,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:07:45,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:07:45,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:07:45,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:07:45,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:07:45,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:07:45,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:07:45,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:07:45,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:07:45,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:07:45,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:07:45,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:07:45,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:07:45,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:07:45,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:07:45,807 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:07:45,807 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:07:45,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:07:45,807 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:07:46,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:07:46,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:07:46,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:07:46,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:07:46,284 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:07:46,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-09-18 02:07:46,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c804bcf/91a3a589a61d4d92a042b233a9afc15f/FLAGbe4b9494c [2020-09-18 02:07:47,104 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:07:47,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-09-18 02:07:47,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c804bcf/91a3a589a61d4d92a042b233a9afc15f/FLAGbe4b9494c [2020-09-18 02:07:47,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c804bcf/91a3a589a61d4d92a042b233a9afc15f [2020-09-18 02:07:47,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:07:47,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:07:47,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:07:47,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:07:47,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:07:47,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:07:47" (1/1) ... [2020-09-18 02:07:47,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d891af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:47, skipping insertion in model container [2020-09-18 02:07:47,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:07:47" (1/1) ... [2020-09-18 02:07:47,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:07:47,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:07:47,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:07:47,958 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:07:48,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:07:48,109 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:07:48,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48 WrapperNode [2020-09-18 02:07:48,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:07:48,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:07:48,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:07:48,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:07:48,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:07:48,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:07:48,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:07:48,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:07:48,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... [2020-09-18 02:07:48,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:07:48,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:07:48,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:07:48,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:07:48,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:07:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:07:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:07:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:07:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:07:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:07:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:07:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:07:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:07:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:07:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:07:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:07:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:07:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:07:48,291 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:07:48,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:07:48,670 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:07:48,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:07:48 BoogieIcfgContainer [2020-09-18 02:07:48,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:07:48,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:07:48,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:07:48,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:07:48,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:07:47" (1/3) ... [2020-09-18 02:07:48,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716a0af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:07:48, skipping insertion in model container [2020-09-18 02:07:48,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:48" (2/3) ... [2020-09-18 02:07:48,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716a0af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:07:48, skipping insertion in model container [2020-09-18 02:07:48,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:07:48" (3/3) ... [2020-09-18 02:07:48,702 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-09-18 02:07:48,714 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:07:48,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:07:48,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:07:48,725 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:07:48,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,773 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,780 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,793 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,793 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,795 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,796 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:48,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:07:48,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:07:48,846 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:07:48,846 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:07:48,847 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:07:48,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:07:48,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:07:48,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:07:48,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:07:48,867 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-18 02:07:48,870 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 02:07:48,929 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 02:07:48,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:07:48,936 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. [2020-09-18 02:07:48,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 02:07:48,965 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 02:07:48,965 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:07:48,967 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. [2020-09-18 02:07:48,971 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:07:48,973 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:07:50,411 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-09-18 02:07:50,411 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-18 02:07:50,416 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-18 02:07:50,446 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 02:07:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 02:07:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:07:50,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:50,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:50,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-09-18 02:07:50,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:50,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572497739] [2020-09-18 02:07:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:50,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572497739] [2020-09-18 02:07:50,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:50,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:07:50,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1408646353] [2020-09-18 02:07:50,806 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:50,810 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:50,828 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:07:50,828 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:50,830 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:07:50,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:07:50,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:50,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:07:50,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:07:50,853 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 02:07:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:50,897 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-18 02:07:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:07:50,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:07:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:50,919 INFO L225 Difference]: With dead ends: 290 [2020-09-18 02:07:50,919 INFO L226 Difference]: Without dead ends: 226 [2020-09-18 02:07:50,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:07:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-18 02:07:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-18 02:07:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-18 02:07:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-18 02:07:51,001 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-18 02:07:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:51,003 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-18 02:07:51,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:07:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-18 02:07:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:07:51,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:51,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:51,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:07:51,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:51,006 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-09-18 02:07:51,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:51,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791940956] [2020-09-18 02:07:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:51,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791940956] [2020-09-18 02:07:51,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:51,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:07:51,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [797996500] [2020-09-18 02:07:51,091 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:51,092 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:51,097 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-18 02:07:51,097 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:51,106 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:07:51,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:07:51,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:07:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:07:51,110 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-18 02:07:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:51,130 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-18 02:07:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:07:51,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 02:07:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:51,134 INFO L225 Difference]: With dead ends: 220 [2020-09-18 02:07:51,134 INFO L226 Difference]: Without dead ends: 220 [2020-09-18 02:07:51,135 INFO L675 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 [2020-09-18 02:07:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-18 02:07:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-18 02:07:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-18 02:07:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-18 02:07:51,159 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-18 02:07:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:51,159 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-18 02:07:51,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:07:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-18 02:07:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:07:51,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:51,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:51,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:07:51,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:51,162 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-09-18 02:07:51,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:51,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127612236] [2020-09-18 02:07:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:51,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127612236] [2020-09-18 02:07:51,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:51,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:07:51,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2043219028] [2020-09-18 02:07:51,312 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:51,313 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:51,316 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-18 02:07:51,316 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:51,381 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 02:07:51,412 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:07:51,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:07:51,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:51,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:07:51,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:07:51,413 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-09-18 02:07:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:51,456 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-09-18 02:07:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:07:51,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 02:07:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:51,458 INFO L225 Difference]: With dead ends: 240 [2020-09-18 02:07:51,458 INFO L226 Difference]: Without dead ends: 176 [2020-09-18 02:07:51,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:07:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-18 02:07:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-09-18 02:07:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-18 02:07:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-09-18 02:07:51,472 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-09-18 02:07:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:51,473 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-09-18 02:07:51,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:07:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-09-18 02:07:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:07:51,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:51,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:51,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:07:51,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-09-18 02:07:51,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:51,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350917204] [2020-09-18 02:07:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:51,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350917204] [2020-09-18 02:07:51,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:51,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:07:51,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1156949092] [2020-09-18 02:07:51,539 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:51,540 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:51,541 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-18 02:07:51,541 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:51,542 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:07:51,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:07:51,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:51,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:07:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:07:51,543 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-09-18 02:07:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:51,554 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-09-18 02:07:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:07:51,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 02:07:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:51,556 INFO L225 Difference]: With dead ends: 225 [2020-09-18 02:07:51,557 INFO L226 Difference]: Without dead ends: 183 [2020-09-18 02:07:51,557 INFO L675 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 [2020-09-18 02:07:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-18 02:07:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-09-18 02:07:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-18 02:07:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-09-18 02:07:51,567 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-09-18 02:07:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:51,568 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-09-18 02:07:51,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:07:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-09-18 02:07:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:07:51,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:51,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:51,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:07:51,570 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:51,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-09-18 02:07:51,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:51,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589642782] [2020-09-18 02:07:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:51,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589642782] [2020-09-18 02:07:51,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:51,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:07:51,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1588056919] [2020-09-18 02:07:51,733 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:51,735 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:51,739 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-09-18 02:07:51,739 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:51,890 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:07:51,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:07:51,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:51,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:07:51,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:07:51,891 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-09-18 02:07:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:51,944 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-09-18 02:07:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:07:51,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-18 02:07:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:51,946 INFO L225 Difference]: With dead ends: 162 [2020-09-18 02:07:51,946 INFO L226 Difference]: Without dead ends: 125 [2020-09-18 02:07:51,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:07:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-18 02:07:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-18 02:07:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-18 02:07:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-09-18 02:07:51,952 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-09-18 02:07:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:51,952 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-09-18 02:07:51,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:07:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-09-18 02:07:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:07:51,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:51,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:51,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:07:51,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:51,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-09-18 02:07:51,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:51,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152866605] [2020-09-18 02:07:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:52,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152866605] [2020-09-18 02:07:52,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:52,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:07:52,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1273135003] [2020-09-18 02:07:52,018 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:52,020 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:52,024 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-09-18 02:07:52,024 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:52,058 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:07:52,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:07:52,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:07:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:07:52,060 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-09-18 02:07:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:52,069 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-09-18 02:07:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:07:52,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-18 02:07:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:52,071 INFO L225 Difference]: With dead ends: 157 [2020-09-18 02:07:52,071 INFO L226 Difference]: Without dead ends: 120 [2020-09-18 02:07:52,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:07:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-18 02:07:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-09-18 02:07:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-18 02:07:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-09-18 02:07:52,077 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-09-18 02:07:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:52,077 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-09-18 02:07:52,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:07:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-09-18 02:07:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:07:52,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:52,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:52,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:07:52,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-09-18 02:07:52,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:52,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161912531] [2020-09-18 02:07:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:52,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161912531] [2020-09-18 02:07:52,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:52,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:07:52,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [768229096] [2020-09-18 02:07:52,170 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:52,172 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:52,175 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-09-18 02:07:52,176 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:52,189 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:07:52,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 02:07:52,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:52,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 02:07:52,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:07:52,190 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-09-18 02:07:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:52,246 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-09-18 02:07:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 02:07:52,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-18 02:07:52,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:52,248 INFO L225 Difference]: With dead ends: 112 [2020-09-18 02:07:52,248 INFO L226 Difference]: Without dead ends: 36 [2020-09-18 02:07:52,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:07:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-18 02:07:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-18 02:07:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-18 02:07:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-18 02:07:52,250 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-09-18 02:07:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:52,251 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-18 02:07:52,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 02:07:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-18 02:07:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:07:52,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:52,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:52,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:07:52,252 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:52,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:52,253 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-09-18 02:07:52,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:52,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63920672] [2020-09-18 02:07:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:07:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:07:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:07:52,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63920672] [2020-09-18 02:07:52,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:07:52,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:07:52,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1639184411] [2020-09-18 02:07:52,307 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:07:52,309 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:07:52,319 INFO L274 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-09-18 02:07:52,319 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:07:52,362 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:07:52,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:07:52,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:07:52,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:07:52,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:07:52,364 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-18 02:07:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:07:52,375 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-18 02:07:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:07:52,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:07:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:07:52,376 INFO L225 Difference]: With dead ends: 35 [2020-09-18 02:07:52,376 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:07:52,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:07:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:07:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:07:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:07:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:07:52,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 02:07:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:07:52,378 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:07:52,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:07:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:07:52,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:07:52,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 02:07:52,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:07:52 BasicIcfg [2020-09-18 02:07:52,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:07:52,388 INFO L168 Benchmark]: Toolchain (without parser) took 5068.86 ms. Allocated memory was 140.0 MB in the beginning and 248.5 MB in the end (delta: 108.5 MB). Free memory was 100.5 MB in the beginning and 152.1 MB in the end (delta: -51.6 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,389 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.59 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 160.2 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.76 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,391 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,392 INFO L168 Benchmark]: RCFGBuilder took 474.25 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,393 INFO L168 Benchmark]: TraceAbstraction took 3698.64 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 134.5 MB in the beginning and 152.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:07:52,397 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 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.59 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 160.2 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.76 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.18 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.25 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3698.64 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 134.5 MB in the beginning and 152.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 28.0 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, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 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: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 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, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 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...