/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:41:27,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:41:27,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:41:28,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:41:28,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:41:28,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:41:28,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:41:28,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:41:28,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:41:28,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:41:28,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:41:28,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:41:28,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:41:28,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:41:28,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:41:28,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:41:28,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:41:28,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:41:28,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:41:28,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:41:28,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:41:28,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:41:28,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:41:28,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:41:28,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:41:28,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:41:28,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:41:28,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:41:28,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:41:28,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:41:28,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:41:28,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:41:28,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:41:28,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:41:28,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:41:28,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:41:28,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:41:28,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:41:28,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:41:28,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:41:28,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:41:28,052 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 23:41:28,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:41:28,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:41:28,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:41:28,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:41:28,079 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:41:28,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:41:28,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:41:28,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:41:28,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:41:28,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:41:28,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:41:28,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:41:28,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:41:28,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:41:28,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:41:28,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:41:28,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:41:28,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:41:28,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:41:28,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:41:28,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:41:28,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:41:28,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:41:28,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:41:28,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:41:28,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:41:28,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:41:28,087 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:41:28,087 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:41:28,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:41:28,087 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:41:28,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:41:28,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:41:28,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:41:28,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:41:28,639 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:41:28,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-09-15 23:41:28,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3925706d/d6904afbf90346e18123e93a2b8373ce/FLAGd091f4cad [2020-09-15 23:41:29,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:41:29,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-09-15 23:41:29,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3925706d/d6904afbf90346e18123e93a2b8373ce/FLAGd091f4cad [2020-09-15 23:41:29,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3925706d/d6904afbf90346e18123e93a2b8373ce [2020-09-15 23:41:29,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:41:29,590 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:41:29,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:41:29,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:41:29,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:41:29,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:41:29" (1/1) ... [2020-09-15 23:41:29,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52697317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:29, skipping insertion in model container [2020-09-15 23:41:29,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:41:29" (1/1) ... [2020-09-15 23:41:29,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:41:29,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:41:30,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:41:30,227 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:41:30,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:41:30,397 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:41:30,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30 WrapperNode [2020-09-15 23:41:30,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:41:30,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:41:30,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:41:30,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:41:30,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:41:30,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:41:30,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:41:30,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:41:30,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (1/1) ... [2020-09-15 23:41:30,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:41:30,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:41:30,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:41:30,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:41:30,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (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 23:41:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:41:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:41:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:41:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:41:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:41:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:41:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:41:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:41:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:41:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:41:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:41:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:41:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:41:30,576 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 23:41:30,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:41:30,943 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:41:30,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:41:30 BoogieIcfgContainer [2020-09-15 23:41:30,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:41:30,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:41:30,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:41:30,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:41:30,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:41:29" (1/3) ... [2020-09-15 23:41:30,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e29ff06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:41:30, skipping insertion in model container [2020-09-15 23:41:30,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:41:30" (2/3) ... [2020-09-15 23:41:30,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e29ff06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:41:30, skipping insertion in model container [2020-09-15 23:41:30,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:41:30" (3/3) ... [2020-09-15 23:41:30,986 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-09-15 23:41:30,996 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:41:30,996 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:41:31,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:41:31,006 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:41:31,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,064 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,072 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,080 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,083 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,083 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,083 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:41:31,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:41:31,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:41:31,130 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:41:31,131 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:41:31,131 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:41:31,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:41:31,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:41:31,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:41:31,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:41:31,151 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-15 23:41:31,153 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:41:31,214 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:41:31,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:41:31,222 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 23:41:31,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:41:31,247 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:41:31,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:41:31,248 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 23:41:31,250 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:41:31,252 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:41:32,646 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-15 23:41:32,841 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-15 23:41:32,887 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-15 23:41:32,887 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-15 23:41:32,892 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-15 23:41:32,922 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-15 23:41:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-15 23:41:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:41:32,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:32,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:32,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-15 23:41:32,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:32,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928892742] [2020-09-15 23:41:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:33,223 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 23:41:33,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928892742] [2020-09-15 23:41:33,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:33,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:41:33,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [901333168] [2020-09-15 23:41:33,227 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:33,231 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:33,248 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:41:33,249 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:33,251 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:33,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:41:33,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:41:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:41:33,274 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-15 23:41:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:33,315 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-15 23:41:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:41:33,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:41:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:33,336 INFO L225 Difference]: With dead ends: 282 [2020-09-15 23:41:33,336 INFO L226 Difference]: Without dead ends: 218 [2020-09-15 23:41:33,338 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 23:41:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-15 23:41:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-15 23:41:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-15 23:41:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-15 23:41:33,418 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-15 23:41:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:33,419 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-15 23:41:33,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:41:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-15 23:41:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:41:33,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:33,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:33,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:41:33,422 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:33,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-15 23:41:33,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:33,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490968512] [2020-09-15 23:41:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:33,589 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 23:41:33,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490968512] [2020-09-15 23:41:33,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:33,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:41:33,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [172001440] [2020-09-15 23:41:33,591 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:33,592 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:33,595 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-15 23:41:33,595 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:33,644 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:33,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:41:33,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:33,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:41:33,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:41:33,647 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-15 23:41:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:33,675 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-15 23:41:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:41:33,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-15 23:41:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:33,678 INFO L225 Difference]: With dead ends: 242 [2020-09-15 23:41:33,678 INFO L226 Difference]: Without dead ends: 116 [2020-09-15 23:41:33,679 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 23:41:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-15 23:41:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-15 23:41:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-15 23:41:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-15 23:41:33,693 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-15 23:41:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:33,694 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-15 23:41:33,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:41:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-15 23:41:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:41:33,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:33,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:33,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:41:33,696 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:33,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-15 23:41:33,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:33,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779184825] [2020-09-15 23:41:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:33,776 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 23:41:33,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779184825] [2020-09-15 23:41:33,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:33,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:41:33,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [96462061] [2020-09-15 23:41:33,778 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:33,780 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:33,781 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-15 23:41:33,781 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:33,792 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:33,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:41:33,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:33,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:41:33,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:41:33,794 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-15 23:41:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:33,806 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-15 23:41:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:41:33,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-15 23:41:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:33,808 INFO L225 Difference]: With dead ends: 110 [2020-09-15 23:41:33,808 INFO L226 Difference]: Without dead ends: 110 [2020-09-15 23:41:33,809 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 23:41:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-15 23:41:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-15 23:41:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-15 23:41:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-15 23:41:33,820 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-15 23:41:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:33,820 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-15 23:41:33,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:41:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-15 23:41:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:41:33,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:33,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:33,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:41:33,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-15 23:41:33,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:33,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72603206] [2020-09-15 23:41:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:33,920 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 23:41:33,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72603206] [2020-09-15 23:41:33,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:33,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:41:33,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2048728101] [2020-09-15 23:41:33,923 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:33,925 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:33,928 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-15 23:41:33,928 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:33,944 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:33,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:41:33,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:41:33,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:41:33,946 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-15 23:41:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:33,959 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-15 23:41:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:41:33,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-15 23:41:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:33,961 INFO L225 Difference]: With dead ends: 104 [2020-09-15 23:41:33,961 INFO L226 Difference]: Without dead ends: 104 [2020-09-15 23:41:33,961 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 23:41:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-15 23:41:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-15 23:41:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-15 23:41:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-15 23:41:33,970 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-15 23:41:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:33,971 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-15 23:41:33,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:41:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-15 23:41:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:41:33,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:33,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:33,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:41:33,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:33,974 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-15 23:41:33,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:33,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370542345] [2020-09-15 23:41:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:34,037 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 23:41:34,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370542345] [2020-09-15 23:41:34,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:34,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:41:34,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1710081359] [2020-09-15 23:41:34,038 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:34,053 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:34,058 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-15 23:41:34,059 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:34,085 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:34,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:41:34,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:41:34,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:41:34,086 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-15 23:41:34,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:34,111 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-15 23:41:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:41:34,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 23:41:34,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:34,113 INFO L225 Difference]: With dead ends: 158 [2020-09-15 23:41:34,113 INFO L226 Difference]: Without dead ends: 104 [2020-09-15 23:41:34,113 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 23:41:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-15 23:41:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-15 23:41:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-15 23:41:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-15 23:41:34,121 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-15 23:41:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:34,121 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-15 23:41:34,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:41:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-15 23:41:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:41:34,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:34,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:34,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:41:34,124 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-15 23:41:34,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:34,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224835478] [2020-09-15 23:41:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:34,261 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 23:41:34,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224835478] [2020-09-15 23:41:34,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:34,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:41:34,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1855362138] [2020-09-15 23:41:34,263 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:34,264 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:34,267 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-15 23:41:34,267 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:34,315 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:41:34,340 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:34,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:41:34,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:34,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:41:34,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:41:34,341 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-15 23:41:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:34,378 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-15 23:41:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:41:34,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 23:41:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:34,380 INFO L225 Difference]: With dead ends: 127 [2020-09-15 23:41:34,380 INFO L226 Difference]: Without dead ends: 87 [2020-09-15 23:41:34,381 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 23:41:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-15 23:41:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-15 23:41:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-15 23:41:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-15 23:41:34,386 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-15 23:41:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:34,387 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-15 23:41:34,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:41:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-15 23:41:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:41:34,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:34,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:34,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:41:34,389 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-15 23:41:34,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:34,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528703410] [2020-09-15 23:41:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:34,467 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 23:41:34,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528703410] [2020-09-15 23:41:34,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:34,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:41:34,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1724910057] [2020-09-15 23:41:34,468 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:34,470 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:34,473 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-15 23:41:34,473 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:34,524 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:41:34,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 23:41:34,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:34,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 23:41:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-15 23:41:34,526 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-15 23:41:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:34,613 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-15 23:41:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:41:34,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-15 23:41:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:34,615 INFO L225 Difference]: With dead ends: 90 [2020-09-15 23:41:34,615 INFO L226 Difference]: Without dead ends: 65 [2020-09-15 23:41:34,615 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 23:41:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-15 23:41:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-15 23:41:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-15 23:41:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-15 23:41:34,620 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-15 23:41:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:34,620 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-15 23:41:34,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 23:41:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-15 23:41:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:41:34,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:34,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:41:34,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:41:34,622 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:34,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:34,623 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-15 23:41:34,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:34,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130506131] [2020-09-15 23:41:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:34,712 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 23:41:34,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130506131] [2020-09-15 23:41:34,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:34,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:41:34,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [98886657] [2020-09-15 23:41:34,714 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:34,715 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:34,719 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-15 23:41:34,719 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:34,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:41:34,840 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:41:34,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 23:41:34,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 23:41:34,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:41:34,841 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-15 23:41:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:34,902 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-15 23:41:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:41:34,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 23:41:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:34,903 INFO L225 Difference]: With dead ends: 62 [2020-09-15 23:41:34,903 INFO L226 Difference]: Without dead ends: 54 [2020-09-15 23:41:34,904 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 23:41:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-15 23:41:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-15 23:41:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-15 23:41:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-15 23:41:34,909 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-15 23:41:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:34,910 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-15 23:41:34,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 23:41:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-15 23:41:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:41:34,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:34,911 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 23:41:34,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:41:34,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:34,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:34,915 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-15 23:41:34,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:34,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572789372] [2020-09-15 23:41:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:34,998 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 23:41:34,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572789372] [2020-09-15 23:41:34,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:34,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:41:34,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1242277749] [2020-09-15 23:41:35,000 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:35,002 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:35,008 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-15 23:41:35,008 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:35,046 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:35,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:41:35,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:35,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:41:35,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:41:35,048 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-15 23:41:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:35,067 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-15 23:41:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:41:35,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:41:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:35,068 INFO L225 Difference]: With dead ends: 63 [2020-09-15 23:41:35,068 INFO L226 Difference]: Without dead ends: 35 [2020-09-15 23:41:35,069 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 23:41:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-15 23:41:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-15 23:41:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-15 23:41:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-15 23:41:35,071 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-15 23:41:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:35,071 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-15 23:41:35,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:41:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-15 23:41:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:41:35,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:35,072 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 23:41:35,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 23:41:35,073 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-15 23:41:35,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:35,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871464127] [2020-09-15 23:41:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:35,154 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 23:41:35,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871464127] [2020-09-15 23:41:35,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:35,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:41:35,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1060502520] [2020-09-15 23:41:35,156 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:35,172 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:35,176 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-15 23:41:35,177 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:35,222 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:35,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:41:35,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:35,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:41:35,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:41:35,224 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-15 23:41:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:35,248 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-15 23:41:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:41:35,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:41:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:35,250 INFO L225 Difference]: With dead ends: 48 [2020-09-15 23:41:35,250 INFO L226 Difference]: Without dead ends: 30 [2020-09-15 23:41:35,251 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 23:41:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-15 23:41:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-15 23:41:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-15 23:41:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-15 23:41:35,261 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-15 23:41:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:35,262 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-15 23:41:35,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:41:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-15 23:41:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:41:35,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:41:35,263 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 23:41:35,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 23:41:35,267 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:41:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:41:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-15 23:41:35,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:41:35,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228142823] [2020-09-15 23:41:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:41:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:41:35,368 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 23:41:35,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228142823] [2020-09-15 23:41:35,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:41:35,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:41:35,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1310479735] [2020-09-15 23:41:35,371 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:41:35,373 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:41:35,378 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-15 23:41:35,379 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:41:35,415 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:41:35,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:41:35,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:41:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:41:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:41:35,417 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-15 23:41:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:41:35,437 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-15 23:41:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:41:35,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:41:35,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:41:35,442 INFO L225 Difference]: With dead ends: 29 [2020-09-15 23:41:35,442 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:41:35,442 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 23:41:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:41:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:41:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:41:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:41:35,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-15 23:41:35,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:41:35,444 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:41:35,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:41:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:41:35,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:41:35,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-15 23:41:35,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:41:35 BasicIcfg [2020-09-15 23:41:35,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:41:35,457 INFO L168 Benchmark]: Toolchain (without parser) took 5870.15 ms. Allocated memory was 141.0 MB in the beginning and 274.7 MB in the end (delta: 133.7 MB). Free memory was 103.2 MB in the beginning and 219.2 MB in the end (delta: -115.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:41:35,458 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:41:35,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.31 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 163.4 MB in the end (delta: -60.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:41:35,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.94 ms. Allocated memory is still 205.5 MB. Free memory was 163.4 MB in the beginning and 161.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:41:35,469 INFO L168 Benchmark]: Boogie Preprocessor took 33.76 ms. Allocated memory is still 205.5 MB. Free memory was 161.4 MB in the beginning and 160.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:41:35,471 INFO L168 Benchmark]: RCFGBuilder took 456.79 ms. Allocated memory is still 205.5 MB. Free memory was 159.4 MB in the beginning and 137.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:41:35,479 INFO L168 Benchmark]: TraceAbstraction took 4489.53 ms. Allocated memory was 205.5 MB in the beginning and 274.7 MB in the end (delta: 69.2 MB). Free memory was 137.0 MB in the beginning and 219.2 MB in the end (delta: -82.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:41:35,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 807.31 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 163.4 MB in the end (delta: -60.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.94 ms. Allocated memory is still 205.5 MB. Free memory was 163.4 MB in the beginning and 161.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.76 ms. Allocated memory is still 205.5 MB. Free memory was 161.4 MB in the beginning and 160.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.79 ms. Allocated memory is still 205.5 MB. Free memory was 159.4 MB in the beginning and 137.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4489.53 ms. Allocated memory was 205.5 MB in the beginning and 274.7 MB in the end (delta: 69.2 MB). Free memory was 137.0 MB in the beginning and 219.2 MB in the end (delta: -82.2 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: 4.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, 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, 0.7s 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...