/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/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:13:13,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:13:13,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:13:13,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:13:13,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:13:13,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:13:13,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:13:13,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:13:13,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:13:13,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:13:13,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:13:13,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:13:13,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:13:13,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:13:13,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:13:13,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:13:13,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:13:13,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:13:13,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:13:13,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:13:13,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:13:13,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:13:13,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:13:13,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:13:13,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-12 00:13:13,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-12 00:13:13,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-12 00:13:13,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-12 00:13:13,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-12 00:13:13,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-12 00:13:13,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:13:13,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:13:13,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:13:13,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:13:13,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:13:13,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:13:13,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:13:13,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:13:13,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:13:13,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:13:13,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:13:13,621 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 [2020-09-12 00:13:13,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:13:13,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:13:13,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:13:13,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:13:13,684 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:13:13,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:13:13,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:13:13,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:13:13,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:13:13,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:13:13,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:13:13,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:13:13,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:13:13,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:13:13,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:13:13,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:13:13,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:13:13,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:13:13,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:13:13,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:13:13,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:13:13,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:13:13,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:13:13,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:13:13,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:13:13,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:13:13,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:13:13,690 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:13:13,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:13:13,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:13:13,690 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:13:14,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:13:14,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:13:14,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:13:14,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:13:14,197 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:13:14,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-12 00:13:14,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5fae9d24/f168f6029ee04f3f9a5f21bc17fed799/FLAG7a263b076 [2020-09-12 00:13:14,937 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:13:14,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-12 00:13:14,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5fae9d24/f168f6029ee04f3f9a5f21bc17fed799/FLAG7a263b076 [2020-09-12 00:13:15,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5fae9d24/f168f6029ee04f3f9a5f21bc17fed799 [2020-09-12 00:13:15,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:13:15,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:13:15,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:15,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:13:15,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:13:15,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:15" (1/1) ... [2020-09-12 00:13:15,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b4e035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:15, skipping insertion in model container [2020-09-12 00:13:15,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:15" (1/1) ... [2020-09-12 00:13:15,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:13:15,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:13:15,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:15,908 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:13:15,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:16,035 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:13:16,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16 WrapperNode [2020-09-12 00:13:16,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:16,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:16,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:13:16,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:13:16,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:16,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:13:16,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:13:16,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:13:16,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (1/1) ... [2020-09-12 00:13:16,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:13:16,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:13:16,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:13:16,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:13:16,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (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 [2020-09-12 00:13:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:13:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:13:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:13:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:13:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:13:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:13:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:13:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:13:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:13:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:13:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:13:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:13:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:13:16,225 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:13:16,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:13:16,669 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:13:16,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:13:16 BoogieIcfgContainer [2020-09-12 00:13:16,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:13:16,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:13:16,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:13:16,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:13:16,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:13:15" (1/3) ... [2020-09-12 00:13:16,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba742d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:13:16, skipping insertion in model container [2020-09-12 00:13:16,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:16" (2/3) ... [2020-09-12 00:13:16,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba742d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:13:16, skipping insertion in model container [2020-09-12 00:13:16,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:13:16" (3/3) ... [2020-09-12 00:13:16,687 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-09-12 00:13:16,699 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:13:16,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:13:16,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:13:16,711 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:13:16,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,753 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,769 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:16,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:13:16,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:13:16,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:13:16,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:13:16,826 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:13:16,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:13:16,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:13:16,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:13:16,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:13:16,847 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:16,850 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:16,900 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-12 00:13:16,900 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:13:16,911 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 49 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. [2020-09-12 00:13:16,914 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:16,954 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-12 00:13:16,956 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:13:16,957 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 49 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. [2020-09-12 00:13:16,962 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:13:16,965 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:13:18,303 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-12 00:13:18,534 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-12 00:13:18,534 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-12 00:13:18,539 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-12 00:13:18,567 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-12 00:13:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-12 00:13:18,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:13:18,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:18,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:18,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:18,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-12 00:13:18,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:18,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007023138] [2020-09-12 00:13:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:18,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007023138] [2020-09-12 00:13:18,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:18,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:13:18,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [331356665] [2020-09-12 00:13:18,890 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:18,894 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:18,912 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:13:18,912 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:18,915 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:18,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:18,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:18,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:18,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:18,936 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-12 00:13:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:19,006 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-12 00:13:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:19,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:13:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:19,028 INFO L225 Difference]: With dead ends: 294 [2020-09-12 00:13:19,028 INFO L226 Difference]: Without dead ends: 230 [2020-09-12 00:13:19,030 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 [2020-09-12 00:13:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-12 00:13:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-12 00:13:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-12 00:13:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-12 00:13:19,114 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-12 00:13:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:19,116 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-12 00:13:19,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-12 00:13:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:13:19,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:19,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:19,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:13:19,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-12 00:13:19,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:19,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528294091] [2020-09-12 00:13:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:19,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528294091] [2020-09-12 00:13:19,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:19,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:13:19,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [180040431] [2020-09-12 00:13:19,282 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:19,283 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:19,288 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-12 00:13:19,288 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:19,339 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:19,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:19,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:19,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:19,342 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-12 00:13:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:19,353 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-12 00:13:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:19,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:13:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:19,356 INFO L225 Difference]: With dead ends: 202 [2020-09-12 00:13:19,357 INFO L226 Difference]: Without dead ends: 202 [2020-09-12 00:13:19,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-12 00:13:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-12 00:13:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-12 00:13:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-12 00:13:19,377 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-12 00:13:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:19,378 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-12 00:13:19,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-12 00:13:19,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:13:19,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:19,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:19,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:13:19,381 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:19,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:19,381 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-12 00:13:19,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:19,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509420046] [2020-09-12 00:13:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:19,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509420046] [2020-09-12 00:13:19,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:19,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:13:19,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1630459764] [2020-09-12 00:13:19,467 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:19,468 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:19,469 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-12 00:13:19,470 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:19,476 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:19,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:19,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:19,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:19,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:19,478 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-12 00:13:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:19,502 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-12 00:13:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:19,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-12 00:13:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:19,507 INFO L225 Difference]: With dead ends: 266 [2020-09-12 00:13:19,508 INFO L226 Difference]: Without dead ends: 140 [2020-09-12 00:13:19,509 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 [2020-09-12 00:13:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-12 00:13:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-12 00:13:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-12 00:13:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-12 00:13:19,536 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-12 00:13:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:19,537 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-12 00:13:19,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-12 00:13:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:13:19,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:19,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:19,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:13:19,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:19,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:19,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-12 00:13:19,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:19,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941955341] [2020-09-12 00:13:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:19,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941955341] [2020-09-12 00:13:19,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:19,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:13:19,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1370430710] [2020-09-12 00:13:19,675 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:19,676 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:19,678 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-12 00:13:19,678 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:19,690 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:19,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:19,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:19,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:19,691 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-12 00:13:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:19,735 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-12 00:13:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:13:19,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-12 00:13:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:19,736 INFO L225 Difference]: With dead ends: 165 [2020-09-12 00:13:19,737 INFO L226 Difference]: Without dead ends: 113 [2020-09-12 00:13:19,737 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 [2020-09-12 00:13:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-12 00:13:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-12 00:13:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-12 00:13:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-12 00:13:19,745 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-12 00:13:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:19,746 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-12 00:13:19,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-12 00:13:19,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:13:19,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:19,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:19,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:13:19,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-12 00:13:19,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:19,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138951146] [2020-09-12 00:13:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:19,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138951146] [2020-09-12 00:13:19,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:19,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:19,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [713886580] [2020-09-12 00:13:19,831 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:19,835 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:19,838 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-12 00:13:19,839 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:19,857 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2995#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:13:19,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:13:19,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:13:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:13:19,859 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-12 00:13:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:19,918 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-12 00:13:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:13:19,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-12 00:13:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:19,920 INFO L225 Difference]: With dead ends: 111 [2020-09-12 00:13:19,920 INFO L226 Difference]: Without dead ends: 80 [2020-09-12 00:13:19,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:13:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-12 00:13:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-12 00:13:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-12 00:13:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-12 00:13:19,926 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-12 00:13:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:19,926 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-12 00:13:19,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:13:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-12 00:13:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:13:19,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:19,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:19,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:13:19,928 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:19,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-12 00:13:19,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:19,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927495316] [2020-09-12 00:13:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:20,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927495316] [2020-09-12 00:13:20,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:20,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:13:20,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [628597290] [2020-09-12 00:13:20,042 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:20,045 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:20,050 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-12 00:13:20,050 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:20,072 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3275#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:13:20,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:13:20,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:20,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:13:20,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:13:20,073 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-12 00:13:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:20,148 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-12 00:13:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:13:20,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-12 00:13:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:20,151 INFO L225 Difference]: With dead ends: 75 [2020-09-12 00:13:20,151 INFO L226 Difference]: Without dead ends: 66 [2020-09-12 00:13:20,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:13:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-12 00:13:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-12 00:13:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-12 00:13:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-12 00:13:20,161 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-12 00:13:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:20,164 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-12 00:13:20,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:13:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-12 00:13:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:20,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:20,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:20,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:13:20,166 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-12 00:13:20,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:20,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526603535] [2020-09-12 00:13:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:20,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526603535] [2020-09-12 00:13:20,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:20,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:20,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1429233882] [2020-09-12 00:13:20,244 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:20,246 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:20,253 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-12 00:13:20,253 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:20,290 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:20,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:20,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:20,291 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-12 00:13:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:20,318 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-12 00:13:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:13:20,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:20,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:20,320 INFO L225 Difference]: With dead ends: 85 [2020-09-12 00:13:20,320 INFO L226 Difference]: Without dead ends: 48 [2020-09-12 00:13:20,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-12 00:13:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-12 00:13:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-12 00:13:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-12 00:13:20,324 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-12 00:13:20,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:20,324 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-12 00:13:20,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-12 00:13:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:20,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:20,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:20,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:13:20,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-12 00:13:20,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:20,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541541784] [2020-09-12 00:13:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:20,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541541784] [2020-09-12 00:13:20,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:20,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:20,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1447004356] [2020-09-12 00:13:20,428 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:20,430 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:20,435 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-12 00:13:20,435 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:20,457 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:20,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:20,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:20,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:20,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:20,458 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-12 00:13:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:20,480 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-12 00:13:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:13:20,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:20,481 INFO L225 Difference]: With dead ends: 73 [2020-09-12 00:13:20,481 INFO L226 Difference]: Without dead ends: 42 [2020-09-12 00:13:20,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-12 00:13:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-12 00:13:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-12 00:13:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-12 00:13:20,484 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-12 00:13:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:20,484 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-12 00:13:20,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-12 00:13:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:20,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:20,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:20,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:13:20,492 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:20,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-12 00:13:20,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:20,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551584555] [2020-09-12 00:13:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:20,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551584555] [2020-09-12 00:13:20,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:20,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:20,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [933667884] [2020-09-12 00:13:20,547 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:20,550 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:20,553 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-12 00:13:20,553 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:20,576 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:20,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:20,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:20,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:20,577 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-12 00:13:20,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:20,588 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-12 00:13:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:13:20,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:20,589 INFO L225 Difference]: With dead ends: 41 [2020-09-12 00:13:20,589 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:13:20,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:13:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:13:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:13:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:13:20,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-12 00:13:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:20,591 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:13:20,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:13:20,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:13:20,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-12 00:13:20,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:13:20 BasicIcfg [2020-09-12 00:13:20,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:13:20,598 INFO L168 Benchmark]: Toolchain (without parser) took 5396.60 ms. Allocated memory was 139.5 MB in the beginning and 249.6 MB in the end (delta: 110.1 MB). Free memory was 99.8 MB in the beginning and 136.6 MB in the end (delta: -36.8 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,599 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.48 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 98.9 MB in the beginning and 156.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.56 ms. Allocated memory is still 200.3 MB. Free memory was 156.5 MB in the beginning and 154.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,602 INFO L168 Benchmark]: Boogie Preprocessor took 41.79 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 153.6 MB in the end (delta: 951.8 kB). Peak memory consumption was 951.8 kB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,603 INFO L168 Benchmark]: RCFGBuilder took 536.35 ms. Allocated memory is still 200.3 MB. Free memory was 152.7 MB in the beginning and 131.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,604 INFO L168 Benchmark]: TraceAbstraction took 3918.68 ms. Allocated memory was 200.3 MB in the beginning and 249.6 MB in the end (delta: 49.3 MB). Free memory was 130.4 MB in the beginning and 136.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:20,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 826.48 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 98.9 MB in the beginning and 156.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.56 ms. Allocated memory is still 200.3 MB. Free memory was 156.5 MB in the beginning and 154.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.79 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 153.6 MB in the end (delta: 951.8 kB). Peak memory consumption was 951.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 536.35 ms. Allocated memory is still 200.3 MB. Free memory was 152.7 MB in the beginning and 131.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3918.68 ms. Allocated memory was 200.3 MB in the beginning and 249.6 MB in the end (delta: 49.3 MB). Free memory was 130.4 MB in the beginning and 136.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 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: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 121 SDslu, 225 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...