/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_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:39:47,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:39:47,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:39:47,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:39:47,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:39:47,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:39:47,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:39:47,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:39:47,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:39:47,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:39:47,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:39:47,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:39:47,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:39:47,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:39:47,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:39:47,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:39:47,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:39:47,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:39:47,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:39:47,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:39:47,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:39:47,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:39:47,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:39:47,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:39:47,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:39:47,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:39:47,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:39:47,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:39:47,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:39:47,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:39:47,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:39:47,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:39:47,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:39:47,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:39:47,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:39:47,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:39:47,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:39:47,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:39:47,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:39:47,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:39:47,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:39:47,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 23:39:47,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:39:47,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:39:47,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:39:47,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:39:47,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:39:47,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:39:47,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:39:47,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:39:47,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:39:47,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:39:47,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:39:47,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:39:47,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:39:47,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:39:47,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:39:47,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:39:47,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:39:47,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:39:47,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:39:47,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:39:47,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:39:47,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:39:47,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:39:47,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:39:47,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:39:47,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:39:47,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:39:47,795 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:39:47,795 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:39:47,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:39:47,796 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:39:48,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:39:48,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:39:48,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:39:48,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:39:48,318 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:39:48,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-15 23:39:48,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cee4d766/0d61d6d805304dcd8ad29f60fc6bdb32/FLAG15f58d831 [2020-09-15 23:39:49,075 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:39:49,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-15 23:39:49,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cee4d766/0d61d6d805304dcd8ad29f60fc6bdb32/FLAG15f58d831 [2020-09-15 23:39:49,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cee4d766/0d61d6d805304dcd8ad29f60fc6bdb32 [2020-09-15 23:39:49,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:39:49,329 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:39:49,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:39:49,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:39:49,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:39:49,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:39:49" (1/1) ... [2020-09-15 23:39:49,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c3ffee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:49, skipping insertion in model container [2020-09-15 23:39:49,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:39:49" (1/1) ... [2020-09-15 23:39:49,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:39:49,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:39:49,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:39:49,977 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:39:50,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:39:50,110 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:39:50,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50 WrapperNode [2020-09-15 23:39:50,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:39:50,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:39:50,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:39:50,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:39:50,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:39:50,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:39:50,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:39:50,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:39:50,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... [2020-09-15 23:39:50,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:39:50,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:39:50,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:39:50,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:39:50,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:39:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:39:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:39:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:39:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:39:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:39:50,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:39:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:39:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:39:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:39:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:39:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:39:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:39:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:39:50,297 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:39:50,707 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:39:50,707 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:39:50,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:39:50 BoogieIcfgContainer [2020-09-15 23:39:50,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:39:50,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:39:50,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:39:50,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:39:50,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:39:49" (1/3) ... [2020-09-15 23:39:50,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a926a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:39:50, skipping insertion in model container [2020-09-15 23:39:50,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:50" (2/3) ... [2020-09-15 23:39:50,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a926a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:39:50, skipping insertion in model container [2020-09-15 23:39:50,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:39:50" (3/3) ... [2020-09-15 23:39:50,722 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-09-15 23:39:50,734 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:39:50,735 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:39:50,745 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:39:50,746 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:39:50,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,786 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,786 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,800 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,800 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,801 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:50,824 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:39:50,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:39:50,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:39:50,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:39:50,853 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:39:50,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:39:50,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:39:50,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:39:50,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:39:50,872 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-15 23:39:50,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:39:50,925 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:39:50,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:39:50,931 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. [2020-09-15 23:39:50,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:39:50,956 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:39:50,956 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:39:50,957 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. [2020-09-15 23:39:50,959 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:39:50,961 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:39:52,409 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-15 23:39:52,582 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-15 23:39:52,628 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-15 23:39:52,628 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-15 23:39:52,633 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-15 23:39:52,660 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-15 23:39:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-15 23:39:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:39:52,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:52,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:52,674 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:52,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-15 23:39:52,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:52,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137558647] [2020-09-15 23:39:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:52,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137558647] [2020-09-15 23:39:52,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:52,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:39:52,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1739784201] [2020-09-15 23:39:52,956 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:52,959 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:52,974 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:39:52,974 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:52,976 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:52,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:39:52,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:52,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:39:52,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:52,999 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-15 23:39:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:53,043 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-15 23:39:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:39:53,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:39:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:53,064 INFO L225 Difference]: With dead ends: 282 [2020-09-15 23:39:53,064 INFO L226 Difference]: Without dead ends: 218 [2020-09-15 23:39:53,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-15 23:39:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-15 23:39:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-15 23:39:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-15 23:39:53,141 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-15 23:39:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:53,142 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-15 23:39:53,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:39:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-15 23:39:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:39:53,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:53,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:53,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:39:53,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:53,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-15 23:39:53,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:53,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826547162] [2020-09-15 23:39:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:53,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826547162] [2020-09-15 23:39:53,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:53,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:53,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [879314913] [2020-09-15 23:39:53,300 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:53,301 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:53,304 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-15 23:39:53,304 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:53,372 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:53,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:53,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:53,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:53,375 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-15 23:39:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:53,405 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-15 23:39:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:39:53,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-15 23:39:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:53,408 INFO L225 Difference]: With dead ends: 242 [2020-09-15 23:39:53,408 INFO L226 Difference]: Without dead ends: 116 [2020-09-15 23:39:53,409 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 [2020-09-15 23:39:53,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-15 23:39:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-15 23:39:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-15 23:39:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-15 23:39:53,420 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-15 23:39:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:53,420 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-15 23:39:53,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-15 23:39:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:39:53,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:53,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:53,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:39:53,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:53,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:53,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-15 23:39:53,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:53,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038951994] [2020-09-15 23:39:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:53,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038951994] [2020-09-15 23:39:53,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:53,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:39:53,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1148375176] [2020-09-15 23:39:53,488 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:53,489 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:53,492 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-15 23:39:53,492 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:53,497 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:53,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:39:53,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:53,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:39:53,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:53,499 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-15 23:39:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:53,526 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-15 23:39:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:39:53,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-15 23:39:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:53,530 INFO L225 Difference]: With dead ends: 110 [2020-09-15 23:39:53,530 INFO L226 Difference]: Without dead ends: 110 [2020-09-15 23:39:53,530 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 [2020-09-15 23:39:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-15 23:39:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-15 23:39:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-15 23:39:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-15 23:39:53,540 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-15 23:39:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:53,540 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-15 23:39:53,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:39:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-15 23:39:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:39:53,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:53,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:53,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:39:53,543 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:53,543 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-15 23:39:53,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:53,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363185759] [2020-09-15 23:39:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:53,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363185759] [2020-09-15 23:39:53,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:53,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:53,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [418659591] [2020-09-15 23:39:53,619 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:53,621 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:53,623 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-15 23:39:53,623 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:53,636 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:53,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:39:53,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:53,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:39:53,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:53,638 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-15 23:39:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:53,651 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-15 23:39:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:39:53,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-15 23:39:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:53,653 INFO L225 Difference]: With dead ends: 104 [2020-09-15 23:39:53,653 INFO L226 Difference]: Without dead ends: 104 [2020-09-15 23:39:53,654 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 [2020-09-15 23:39:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-15 23:39:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-15 23:39:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-15 23:39:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-15 23:39:53,664 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-15 23:39:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:53,664 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-15 23:39:53,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:39:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-15 23:39:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:39:53,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:53,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:53,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:39:53,666 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-15 23:39:53,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:53,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324623023] [2020-09-15 23:39:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:53,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324623023] [2020-09-15 23:39:53,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:53,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:39:53,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460163790] [2020-09-15 23:39:53,726 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:53,727 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:53,731 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-15 23:39:53,731 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:53,754 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:53,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:53,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:53,755 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-15 23:39:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:53,782 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-15 23:39:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:39:53,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 23:39:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:53,784 INFO L225 Difference]: With dead ends: 158 [2020-09-15 23:39:53,784 INFO L226 Difference]: Without dead ends: 104 [2020-09-15 23:39:53,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:39:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-15 23:39:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-15 23:39:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-15 23:39:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-15 23:39:53,791 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-15 23:39:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:53,791 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-15 23:39:53,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-15 23:39:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:39:53,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:53,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:53,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:39:53,794 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:53,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-15 23:39:53,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:53,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91020013] [2020-09-15 23:39:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:53,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91020013] [2020-09-15 23:39:53,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:53,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:53,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1308685033] [2020-09-15 23:39:53,930 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:53,931 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:53,935 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-15 23:39:53,935 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:54,050 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:54,091 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:54,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:54,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:54,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:54,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:54,093 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-15 23:39:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:54,148 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-15 23:39:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:39:54,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 23:39:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:54,149 INFO L225 Difference]: With dead ends: 127 [2020-09-15 23:39:54,150 INFO L226 Difference]: Without dead ends: 87 [2020-09-15 23:39:54,150 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 [2020-09-15 23:39:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-15 23:39:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-15 23:39:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-15 23:39:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-15 23:39:54,158 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-15 23:39:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:54,159 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-15 23:39:54,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-15 23:39:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:39:54,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:54,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:54,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:39:54,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-15 23:39:54,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:54,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754137340] [2020-09-15 23:39:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:54,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754137340] [2020-09-15 23:39:54,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:54,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:39:54,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [831909384] [2020-09-15 23:39:54,315 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:54,317 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:54,322 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-15 23:39:54,323 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:54,411 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:39:54,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 23:39:54,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:54,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 23:39:54,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-15 23:39:54,413 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-15 23:39:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:54,470 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-15 23:39:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:39:54,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-15 23:39:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:54,471 INFO L225 Difference]: With dead ends: 90 [2020-09-15 23:39:54,471 INFO L226 Difference]: Without dead ends: 65 [2020-09-15 23:39:54,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:39:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-15 23:39:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-15 23:39:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-15 23:39:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-15 23:39:54,475 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-15 23:39:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:54,476 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-15 23:39:54,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 23:39:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-15 23:39:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:39:54,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:54,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:54,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:39:54,477 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:54,478 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-15 23:39:54,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:54,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895078778] [2020-09-15 23:39:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:54,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895078778] [2020-09-15 23:39:54,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:54,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:39:54,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [358718193] [2020-09-15 23:39:54,553 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:54,555 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:54,559 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-15 23:39:54,559 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:54,599 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:54,621 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:39:54,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 23:39:54,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 23:39:54,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:39:54,622 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-15 23:39:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:54,682 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-15 23:39:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:39:54,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 23:39:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:54,684 INFO L225 Difference]: With dead ends: 62 [2020-09-15 23:39:54,684 INFO L226 Difference]: Without dead ends: 54 [2020-09-15 23:39:54,684 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 [2020-09-15 23:39:54,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-15 23:39:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-15 23:39:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-15 23:39:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-15 23:39:54,687 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-15 23:39:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:54,688 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-15 23:39:54,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 23:39:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-15 23:39:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:39:54,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:54,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:54,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:39:54,689 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:54,690 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-15 23:39:54,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:54,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314915300] [2020-09-15 23:39:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:54,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314915300] [2020-09-15 23:39:54,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:54,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:39:54,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1798013718] [2020-09-15 23:39:54,751 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:54,753 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:54,758 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-15 23:39:54,759 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:54,788 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:54,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:54,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:54,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:54,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:54,789 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-15 23:39:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:54,807 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-15 23:39:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:39:54,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:39:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:54,808 INFO L225 Difference]: With dead ends: 63 [2020-09-15 23:39:54,808 INFO L226 Difference]: Without dead ends: 35 [2020-09-15 23:39:54,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:39:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-15 23:39:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-15 23:39:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-15 23:39:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-15 23:39:54,811 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-15 23:39:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:54,811 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-15 23:39:54,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:54,812 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-15 23:39:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:39:54,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:54,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:54,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 23:39:54,813 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-15 23:39:54,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:54,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397526801] [2020-09-15 23:39:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:54,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397526801] [2020-09-15 23:39:54,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:54,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:39:54,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [650938209] [2020-09-15 23:39:54,867 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:54,869 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:54,873 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-15 23:39:54,874 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:54,888 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:54,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:54,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:54,890 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-15 23:39:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:54,911 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-15 23:39:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:39:54,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:39:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:54,912 INFO L225 Difference]: With dead ends: 48 [2020-09-15 23:39:54,913 INFO L226 Difference]: Without dead ends: 30 [2020-09-15 23:39:54,913 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 [2020-09-15 23:39:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-15 23:39:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-15 23:39:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-15 23:39:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-15 23:39:54,915 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-15 23:39:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:54,916 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-15 23:39:54,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-15 23:39:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:39:54,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:54,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:54,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 23:39:54,917 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:54,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:54,918 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-15 23:39:54,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:54,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737784601] [2020-09-15 23:39:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:54,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737784601] [2020-09-15 23:39:54,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:54,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:54,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1450146033] [2020-09-15 23:39:54,979 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:55,013 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:55,019 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-15 23:39:55,019 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:55,036 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:55,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:55,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:55,038 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-15 23:39:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:55,054 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-15 23:39:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:39:55,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:39:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:55,055 INFO L225 Difference]: With dead ends: 29 [2020-09-15 23:39:55,055 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:39:55,056 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 [2020-09-15 23:39:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:39:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:39:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:39:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:39:55,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-15 23:39:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:55,057 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:39:55,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:39:55,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:39:55,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-15 23:39:55,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:39:55 BasicIcfg [2020-09-15 23:39:55,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:39:55,064 INFO L168 Benchmark]: Toolchain (without parser) took 5739.74 ms. Allocated memory was 146.8 MB in the beginning and 284.2 MB in the end (delta: 137.4 MB). Free memory was 101.7 MB in the beginning and 243.8 MB in the end (delta: -142.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:39:55,065 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:39:55,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.05 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 101.0 MB in the beginning and 162.4 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:55,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.68 ms. Allocated memory is still 205.0 MB. Free memory was 162.4 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:55,068 INFO L168 Benchmark]: Boogie Preprocessor took 31.76 ms. Allocated memory is still 205.0 MB. Free memory was 160.4 MB in the beginning and 159.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:55,068 INFO L168 Benchmark]: RCFGBuilder took 508.38 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 136.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:55,069 INFO L168 Benchmark]: TraceAbstraction took 4348.27 ms. Allocated memory was 205.0 MB in the beginning and 284.2 MB in the end (delta: 79.2 MB). Free memory was 136.1 MB in the beginning and 243.8 MB in the end (delta: -107.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:39:55,073 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 777.05 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 101.0 MB in the beginning and 162.4 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.68 ms. Allocated memory is still 205.0 MB. Free memory was 162.4 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.76 ms. Allocated memory is still 205.0 MB. Free memory was 160.4 MB in the beginning and 159.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.38 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 136.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4348.27 ms. Allocated memory was 205.0 MB in the beginning and 284.2 MB in the end (delta: 79.2 MB). Free memory was 136.1 MB in the beginning and 243.8 MB in the end (delta: -107.7 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: 1.7s, 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: 4.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, 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, 18 ImplicationChecksByTransitivity, 0.2s 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, 0.2s SatisfiabilityAnalysisTime, 0.6s 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...