/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:03:49,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:03:49,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:03:49,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:03:49,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:03:49,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:03:49,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:03:49,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:03:49,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:03:49,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:03:49,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:03:49,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:03:49,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:03:49,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:03:49,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:03:49,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:03:49,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:03:49,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:03:49,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:03:49,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:03:49,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:03:49,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:03:49,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:03:49,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:03:49,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:03:49,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:03:49,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:03:49,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:03:49,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:03:49,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:03:49,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:03:49,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:03:49,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:03:49,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:03:49,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:03:49,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:03:49,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:03:49,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:03:49,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:03:49,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:03:49,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:03:49,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:03:49,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:03:49,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:03:49,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:03:49,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:03:49,654 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:03:49,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:03:49,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:03:49,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:03:49,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:03:49,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:03:49,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:03:49,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:03:49,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:03:49,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:03:49,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:03:49,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:03:49,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:03:49,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:03:49,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:03:49,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:03:49,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:03:49,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:49,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:03:49,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:03:49,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:03:49,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:03:49,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:03:49,660 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:03:49,660 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:03:49,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:03:49,660 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:03:49,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:03:49,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:03:49,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:03:49,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:03:49,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:03:49,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-06 01:03:50,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1aee44c/fbbf548ca7424ebbb4935115b885f45d/FLAG2ecb0f97d [2020-10-06 01:03:50,583 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:03:50,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-06 01:03:50,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1aee44c/fbbf548ca7424ebbb4935115b885f45d/FLAG2ecb0f97d [2020-10-06 01:03:50,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1aee44c/fbbf548ca7424ebbb4935115b885f45d [2020-10-06 01:03:50,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:03:50,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:03:50,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:50,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:03:50,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:03:50,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:50" (1/1) ... [2020-10-06 01:03:50,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66afe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:50, skipping insertion in model container [2020-10-06 01:03:50,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:50" (1/1) ... [2020-10-06 01:03:50,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:03:50,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:03:51,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:51,376 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:03:51,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:51,621 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:03:51,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51 WrapperNode [2020-10-06 01:03:51,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:51,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:51,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:03:51,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:03:51,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:51,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:03:51,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:03:51,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:03:51,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... [2020-10-06 01:03:51,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:03:51,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:03:51,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:03:51,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:03:51,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:03:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:03:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:03:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:03:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:03:51,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:03:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:03:51,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:03:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:03:51,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:03:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:03:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:03:51,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:03:51,769 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:03:52,137 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:03:52,137 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:03:52,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:52 BoogieIcfgContainer [2020-10-06 01:03:52,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:03:52,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:03:52,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:03:52,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:03:52,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:03:50" (1/3) ... [2020-10-06 01:03:52,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f6a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:52, skipping insertion in model container [2020-10-06 01:03:52,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:51" (2/3) ... [2020-10-06 01:03:52,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f6a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:52, skipping insertion in model container [2020-10-06 01:03:52,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:52" (3/3) ... [2020-10-06 01:03:52,148 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-10-06 01:03:52,159 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:03:52,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:03:52,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:03:52,168 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:03:52,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:52,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:03:52,251 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:03:52,251 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:03:52,251 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:03:52,251 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:03:52,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:03:52,252 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:03:52,252 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:03:52,252 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:03:52,268 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:52,270 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:52,316 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:52,316 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:52,325 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:52,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:52,349 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:52,350 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:52,351 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:52,353 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:03:52,354 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:03:53,621 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-06 01:03:53,785 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-06 01:03:53,828 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-10-06 01:03:53,829 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-10-06 01:03:53,833 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:03:53,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:03:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:03:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:03:53,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:53,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:53,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:53,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-06 01:03:53,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:53,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056801845] [2020-10-06 01:03:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:54,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056801845] [2020-10-06 01:03:54,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:54,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:54,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1580229984] [2020-10-06 01:03:54,111 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:54,114 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:54,130 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:03:54,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:54,134 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:54,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:54,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:54,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:54,153 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:03:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:54,191 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-06 01:03:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:54,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:03:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:54,208 INFO L225 Difference]: With dead ends: 282 [2020-10-06 01:03:54,208 INFO L226 Difference]: Without dead ends: 218 [2020-10-06 01:03:54,209 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 [2020-10-06 01:03:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-06 01:03:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-06 01:03:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-06 01:03:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-06 01:03:54,276 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-06 01:03:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:54,277 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-06 01:03:54,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-06 01:03:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:03:54,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:54,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:54,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:03:54,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-06 01:03:54,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:54,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451776136] [2020-10-06 01:03:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:54,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451776136] [2020-10-06 01:03:54,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:54,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:54,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1564953030] [2020-10-06 01:03:54,384 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:54,385 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:54,387 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:03:54,388 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:54,437 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:54,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:54,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:54,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:54,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:54,439 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-06 01:03:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:54,465 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-06 01:03:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:54,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 01:03:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:54,468 INFO L225 Difference]: With dead ends: 242 [2020-10-06 01:03:54,468 INFO L226 Difference]: Without dead ends: 116 [2020-10-06 01:03:54,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-06 01:03:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-06 01:03:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-06 01:03:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-06 01:03:54,484 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-06 01:03:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:54,484 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-06 01:03:54,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-06 01:03:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:03:54,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:54,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:54,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:03:54,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:54,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-06 01:03:54,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:54,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105145119] [2020-10-06 01:03:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:54,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105145119] [2020-10-06 01:03:54,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:54,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:54,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1655645114] [2020-10-06 01:03:54,546 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:54,547 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:54,549 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-10-06 01:03:54,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:54,555 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:54,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:54,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:54,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:54,556 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-10-06 01:03:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:54,568 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-10-06 01:03:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:54,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 01:03:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:54,570 INFO L225 Difference]: With dead ends: 110 [2020-10-06 01:03:54,571 INFO L226 Difference]: Without dead ends: 110 [2020-10-06 01:03:54,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-06 01:03:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-06 01:03:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-06 01:03:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-10-06 01:03:54,581 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-10-06 01:03:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:54,581 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-10-06 01:03:54,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-10-06 01:03:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:03:54,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:54,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:54,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:03:54,583 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-06 01:03:54,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:54,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282734148] [2020-10-06 01:03:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:54,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282734148] [2020-10-06 01:03:54,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:54,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:54,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [153619444] [2020-10-06 01:03:54,678 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:54,680 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:54,682 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-06 01:03:54,683 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:54,701 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:54,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:54,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:54,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:54,703 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-10-06 01:03:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:54,715 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-10-06 01:03:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:54,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-06 01:03:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:54,717 INFO L225 Difference]: With dead ends: 104 [2020-10-06 01:03:54,717 INFO L226 Difference]: Without dead ends: 104 [2020-10-06 01:03:54,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-06 01:03:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-06 01:03:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-06 01:03:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-10-06 01:03:54,726 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-10-06 01:03:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:54,727 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-10-06 01:03:54,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-10-06 01:03:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:03:54,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:54,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:54,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:03:54,729 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-10-06 01:03:54,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:54,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30242219] [2020-10-06 01:03:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:54,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30242219] [2020-10-06 01:03:54,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:54,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:54,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [843521707] [2020-10-06 01:03:54,778 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:54,780 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:54,784 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-10-06 01:03:54,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:54,809 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:54,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:54,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:54,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:54,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:54,810 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-10-06 01:03:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:54,850 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-10-06 01:03:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:54,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-06 01:03:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:54,852 INFO L225 Difference]: With dead ends: 158 [2020-10-06 01:03:54,852 INFO L226 Difference]: Without dead ends: 104 [2020-10-06 01:03:54,853 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 [2020-10-06 01:03:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-06 01:03:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-06 01:03:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-06 01:03:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-10-06 01:03:54,859 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-10-06 01:03:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:54,860 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-10-06 01:03:54,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-10-06 01:03:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:03:54,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:54,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:54,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:03:54,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-10-06 01:03:54,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:54,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664564709] [2020-10-06 01:03:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:54,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664564709] [2020-10-06 01:03:54,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:54,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:54,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1782170465] [2020-10-06 01:03:54,924 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:54,926 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:54,929 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-06 01:03:54,929 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:54,957 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:54,989 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:54,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:54,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:54,991 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-10-06 01:03:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:55,022 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-10-06 01:03:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:55,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-06 01:03:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:55,024 INFO L225 Difference]: With dead ends: 127 [2020-10-06 01:03:55,024 INFO L226 Difference]: Without dead ends: 87 [2020-10-06 01:03:55,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-06 01:03:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-06 01:03:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-06 01:03:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-10-06 01:03:55,029 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-10-06 01:03:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:55,030 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-10-06 01:03:55,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-10-06 01:03:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:03:55,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:55,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:55,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:03:55,032 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-06 01:03:55,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:55,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438265601] [2020-10-06 01:03:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:55,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438265601] [2020-10-06 01:03:55,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:55,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:55,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [869877564] [2020-10-06 01:03:55,087 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:55,088 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:55,092 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-06 01:03:55,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:55,136 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:03:55,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:03:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:55,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:03:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:03:55,137 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-10-06 01:03:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:55,178 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-10-06 01:03:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:03:55,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-06 01:03:55,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:55,180 INFO L225 Difference]: With dead ends: 90 [2020-10-06 01:03:55,180 INFO L226 Difference]: Without dead ends: 65 [2020-10-06 01:03:55,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:03:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-06 01:03:55,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-06 01:03:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-06 01:03:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-10-06 01:03:55,184 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-10-06 01:03:55,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:55,185 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-10-06 01:03:55,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:03:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-10-06 01:03:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:03:55,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:55,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:55,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:03:55,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:55,187 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-06 01:03:55,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:55,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56009509] [2020-10-06 01:03:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:55,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56009509] [2020-10-06 01:03:55,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:55,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:03:55,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [824887522] [2020-10-06 01:03:55,241 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:55,243 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:55,247 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-06 01:03:55,247 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:55,286 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:55,306 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:03:55,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:03:55,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:03:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:03:55,307 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-10-06 01:03:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:55,355 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-10-06 01:03:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:03:55,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:03:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:55,356 INFO L225 Difference]: With dead ends: 62 [2020-10-06 01:03:55,356 INFO L226 Difference]: Without dead ends: 54 [2020-10-06 01:03:55,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:03:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-06 01:03:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-06 01:03:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 01:03:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-10-06 01:03:55,359 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-10-06 01:03:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:55,360 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-10-06 01:03:55,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:03:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-10-06 01:03:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:55,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:55,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:55,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:03:55,361 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:55,362 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-06 01:03:55,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:55,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415477067] [2020-10-06 01:03:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:55,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415477067] [2020-10-06 01:03:55,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:55,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:55,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [666707991] [2020-10-06 01:03:55,399 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:55,401 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:55,405 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-10-06 01:03:55,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:55,434 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:55,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:55,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:55,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:55,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:55,436 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-10-06 01:03:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:55,452 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-10-06 01:03:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:55,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:55,453 INFO L225 Difference]: With dead ends: 63 [2020-10-06 01:03:55,454 INFO L226 Difference]: Without dead ends: 35 [2020-10-06 01:03:55,454 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 [2020-10-06 01:03:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-06 01:03:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-06 01:03:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-06 01:03:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-06 01:03:55,456 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-06 01:03:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:55,456 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-06 01:03:55,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-06 01:03:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:55,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:55,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:55,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 01:03:55,458 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-10-06 01:03:55,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:55,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594336666] [2020-10-06 01:03:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:55,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594336666] [2020-10-06 01:03:55,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:55,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:55,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1524938280] [2020-10-06 01:03:55,491 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:55,492 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:55,496 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-10-06 01:03:55,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:55,509 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:55,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:55,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:55,510 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-06 01:03:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:55,526 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-10-06 01:03:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:55,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:55,527 INFO L225 Difference]: With dead ends: 48 [2020-10-06 01:03:55,527 INFO L226 Difference]: Without dead ends: 30 [2020-10-06 01:03:55,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-06 01:03:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-06 01:03:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-06 01:03:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-06 01:03:55,530 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-06 01:03:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:55,530 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-06 01:03:55,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-06 01:03:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:55,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:55,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:55,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-06 01:03:55,531 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:55,532 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-10-06 01:03:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:55,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868745066] [2020-10-06 01:03:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:55,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868745066] [2020-10-06 01:03:55,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:55,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:55,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1636436208] [2020-10-06 01:03:55,583 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:55,585 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:55,588 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-10-06 01:03:55,588 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:55,601 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:55,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:55,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:55,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:55,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:55,603 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-06 01:03:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:55,615 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-06 01:03:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:55,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:55,616 INFO L225 Difference]: With dead ends: 29 [2020-10-06 01:03:55,616 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:03:55,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:03:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:03:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:03:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:03:55,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:03:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:55,618 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:03:55,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:03:55,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:03:55,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-06 01:03:55,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:03:55 BasicIcfg [2020-10-06 01:03:55,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:03:55,625 INFO L168 Benchmark]: Toolchain (without parser) took 4739.16 ms. Allocated memory was 141.0 MB in the beginning and 279.4 MB in the end (delta: 138.4 MB). Free memory was 101.5 MB in the beginning and 235.0 MB in the end (delta: -133.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:55,626 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-06 01:03:55,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.46 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 163.6 MB in the end (delta: -62.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:55,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 205.0 MB. Free memory was 163.6 MB in the beginning and 161.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:55,628 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 160.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:55,629 INFO L168 Benchmark]: RCFGBuilder took 432.23 ms. Allocated memory is still 205.0 MB. Free memory was 159.6 MB in the beginning and 137.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:55,630 INFO L168 Benchmark]: TraceAbstraction took 3481.82 ms. Allocated memory was 205.0 MB in the beginning and 279.4 MB in the end (delta: 74.4 MB). Free memory was 137.2 MB in the beginning and 235.0 MB in the end (delta: -97.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:03:55,634 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.46 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 163.6 MB in the end (delta: -62.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 205.0 MB. Free memory was 163.6 MB in the beginning and 161.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.18 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 160.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.23 ms. Allocated memory is still 205.0 MB. Free memory was 159.6 MB in the beginning and 137.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3481.82 ms. Allocated memory was 205.0 MB in the beginning and 279.4 MB in the end (delta: 74.4 MB). Free memory was 137.2 MB in the beginning and 235.0 MB in the end (delta: -97.8 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: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 214 SDtfs, 132 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...