/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:57:55,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:57:55,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:57:55,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:57:55,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:57:55,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:57:55,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:57:55,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:57:55,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:57:55,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:57:55,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:57:55,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:57:55,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:57:55,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:57:55,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:57:55,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:57:55,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:57:55,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:57:55,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:57:55,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:57:55,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:57:55,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:57:55,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:57:55,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:57:55,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:57:55,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:57:55,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:57:55,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:57:55,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:57:55,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 23:57:55,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:57:55,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:57:55,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:57:55,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:57:55,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:57:55,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:57:55,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:57:55,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:57:55,980 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:57:55,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:57:55,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:57:55,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:57:55,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:57:55,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:57:55,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:57:55,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:57:55,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:57:55,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:57:55,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:57:55,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:57:55,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:57:55,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:57:55,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:57:55,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:57:55,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:57:55,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:57:55,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:57:55,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:57:55,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:57:55,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:57:55,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:57:55,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:57:55,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:57:55,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:57:56,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:57:56,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:57:56,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:57:56,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:57:56,317 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:57:56,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-21 23:57:56,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2c90356/240b538c0dfc4f078b5a61a80f073d04/FLAG6d2a7b91c [2020-08-21 23:57:56,972 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:57:56,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-21 23:57:56,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2c90356/240b538c0dfc4f078b5a61a80f073d04/FLAG6d2a7b91c [2020-08-21 23:57:57,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2c90356/240b538c0dfc4f078b5a61a80f073d04 [2020-08-21 23:57:57,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:57:57,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:57:57,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:57:57,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:57:57,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:57:57,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:57:57" (1/1) ... [2020-08-21 23:57:57,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1be1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:57, skipping insertion in model container [2020-08-21 23:57:57,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:57:57" (1/1) ... [2020-08-21 23:57:57,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:57:57,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:57:57,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:57:57,870 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:57:58,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:57:58,375 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:57:58,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58 WrapperNode [2020-08-21 23:57:58,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:57:58,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:57:58,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:57:58,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:57:58,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (1/1) ... [2020-08-21 23:57:58,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:57:58,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:57:58,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:57:58,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:57:58,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (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 [2020-08-21 23:57:58,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:57:58,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:57:58,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:57:58,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:57:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:57:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 23:57:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 23:57:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 23:57:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:57:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:57:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 23:57:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 23:57:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 23:57:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 23:57:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 23:57:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 23:57:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 23:57:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:57:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:57:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:58:00,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:58:00,025 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 23:58:00,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:58:00 BoogieIcfgContainer [2020-08-21 23:58:00,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:58:00,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:58:00,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:58:00,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:58:00,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:57:57" (1/3) ... [2020-08-21 23:58:00,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d6f35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:58:00, skipping insertion in model container [2020-08-21 23:58:00,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:58" (2/3) ... [2020-08-21 23:58:00,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d6f35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:58:00, skipping insertion in model container [2020-08-21 23:58:00,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:58:00" (3/3) ... [2020-08-21 23:58:00,041 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-21 23:58:00,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:58:00,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:58:00,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:58:00,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:58:00,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:58:00,104 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:58:00,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:58:00,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:58:00,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:58:00,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:58:00,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:58:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-08-21 23:58:00,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 23:58:00,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:00,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:00,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:00,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1777408137, now seen corresponding path program 1 times [2020-08-21 23:58:00,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:00,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476083609] [2020-08-21 23:58:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:01,158 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:01,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476083609] [2020-08-21 23:58:01,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:01,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:58:01,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665132405] [2020-08-21 23:58:01,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:58:01,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:01,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:58:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:01,273 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 4 states. [2020-08-21 23:58:01,598 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-08-21 23:58:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:03,398 INFO L93 Difference]: Finished difference Result 649 states and 1122 transitions. [2020-08-21 23:58:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:58:03,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-21 23:58:03,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:03,447 INFO L225 Difference]: With dead ends: 649 [2020-08-21 23:58:03,449 INFO L226 Difference]: Without dead ends: 534 [2020-08-21 23:58:03,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:58:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-21 23:58:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2020-08-21 23:58:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-08-21 23:58:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 797 transitions. [2020-08-21 23:58:03,633 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 797 transitions. Word has length 151 [2020-08-21 23:58:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:03,636 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 797 transitions. [2020-08-21 23:58:03,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:58:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 797 transitions. [2020-08-21 23:58:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 23:58:03,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:03,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:03,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:58:03,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:03,652 INFO L82 PathProgramCache]: Analyzing trace with hash 623105739, now seen corresponding path program 1 times [2020-08-21 23:58:03,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:03,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808855690] [2020-08-21 23:58:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:04,263 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:04,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808855690] [2020-08-21 23:58:04,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:04,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:58:04,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951691124] [2020-08-21 23:58:04,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:58:04,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:58:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:58:04,342 INFO L87 Difference]: Start difference. First operand 532 states and 797 transitions. Second operand 5 states. [2020-08-21 23:58:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:06,807 INFO L93 Difference]: Finished difference Result 1543 states and 2308 transitions. [2020-08-21 23:58:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:58:06,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-21 23:58:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:06,816 INFO L225 Difference]: With dead ends: 1543 [2020-08-21 23:58:06,816 INFO L226 Difference]: Without dead ends: 1024 [2020-08-21 23:58:06,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:58:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-21 23:58:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1022. [2020-08-21 23:58:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-21 23:58:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1517 transitions. [2020-08-21 23:58:06,872 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1517 transitions. Word has length 151 [2020-08-21 23:58:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:06,873 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1517 transitions. [2020-08-21 23:58:06,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:58:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1517 transitions. [2020-08-21 23:58:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 23:58:06,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:06,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:06,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:58:06,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:06,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1496630273, now seen corresponding path program 1 times [2020-08-21 23:58:06,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:06,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801577200] [2020-08-21 23:58:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:07,213 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:07,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:07,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801577200] [2020-08-21 23:58:07,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:07,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:58:07,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307563705] [2020-08-21 23:58:07,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:58:07,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:07,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:58:07,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:07,253 INFO L87 Difference]: Start difference. First operand 1022 states and 1517 transitions. Second operand 4 states. [2020-08-21 23:58:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:09,197 INFO L93 Difference]: Finished difference Result 3020 states and 4481 transitions. [2020-08-21 23:58:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:58:09,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-08-21 23:58:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:09,214 INFO L225 Difference]: With dead ends: 3020 [2020-08-21 23:58:09,214 INFO L226 Difference]: Without dead ends: 2030 [2020-08-21 23:58:09,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-08-21 23:58:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1024. [2020-08-21 23:58:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-21 23:58:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1519 transitions. [2020-08-21 23:58:09,316 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1519 transitions. Word has length 152 [2020-08-21 23:58:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:09,318 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1519 transitions. [2020-08-21 23:58:09,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:58:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1519 transitions. [2020-08-21 23:58:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-21 23:58:09,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:09,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:09,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:58:09,329 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:09,329 INFO L82 PathProgramCache]: Analyzing trace with hash -263532694, now seen corresponding path program 1 times [2020-08-21 23:58:09,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:09,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862796544] [2020-08-21 23:58:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:09,934 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:10,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862796544] [2020-08-21 23:58:10,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:10,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:58:10,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950785393] [2020-08-21 23:58:10,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:58:10,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:10,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:58:10,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:58:10,025 INFO L87 Difference]: Start difference. First operand 1024 states and 1519 transitions. Second operand 5 states. [2020-08-21 23:58:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:12,457 INFO L93 Difference]: Finished difference Result 2950 states and 4361 transitions. [2020-08-21 23:58:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:58:12,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-08-21 23:58:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:12,472 INFO L225 Difference]: With dead ends: 2950 [2020-08-21 23:58:12,473 INFO L226 Difference]: Without dead ends: 1960 [2020-08-21 23:58:12,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:58:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-08-21 23:58:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1958. [2020-08-21 23:58:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-08-21 23:58:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2870 transitions. [2020-08-21 23:58:12,565 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2870 transitions. Word has length 153 [2020-08-21 23:58:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:12,566 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2870 transitions. [2020-08-21 23:58:12,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:58:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2870 transitions. [2020-08-21 23:58:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 23:58:12,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:12,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:12,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:58:12,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash -919312578, now seen corresponding path program 1 times [2020-08-21 23:58:12,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:12,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888936537] [2020-08-21 23:58:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:12,879 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:12,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888936537] [2020-08-21 23:58:12,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:12,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:58:12,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111603401] [2020-08-21 23:58:12,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:58:12,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:12,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:58:12,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:12,916 INFO L87 Difference]: Start difference. First operand 1958 states and 2870 transitions. Second operand 4 states. [2020-08-21 23:58:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:15,828 INFO L93 Difference]: Finished difference Result 5790 states and 8482 transitions. [2020-08-21 23:58:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:58:15,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-21 23:58:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:15,848 INFO L225 Difference]: With dead ends: 5790 [2020-08-21 23:58:15,848 INFO L226 Difference]: Without dead ends: 3880 [2020-08-21 23:58:15,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2020-08-21 23:58:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 1962. [2020-08-21 23:58:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-08-21 23:58:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2874 transitions. [2020-08-21 23:58:16,018 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2874 transitions. Word has length 154 [2020-08-21 23:58:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:16,021 INFO L479 AbstractCegarLoop]: Abstraction has 1962 states and 2874 transitions. [2020-08-21 23:58:16,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:58:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2874 transitions. [2020-08-21 23:58:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 23:58:16,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:16,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:16,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:58:16,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1585428376, now seen corresponding path program 1 times [2020-08-21 23:58:16,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:16,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386227355] [2020-08-21 23:58:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:16,378 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:16,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386227355] [2020-08-21 23:58:16,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:16,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:58:16,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063257344] [2020-08-21 23:58:16,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:58:16,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:16,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:58:16,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:16,458 INFO L87 Difference]: Start difference. First operand 1962 states and 2874 transitions. Second operand 4 states. [2020-08-21 23:58:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:18,981 INFO L93 Difference]: Finished difference Result 5414 states and 7950 transitions. [2020-08-21 23:58:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:58:18,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-08-21 23:58:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:18,999 INFO L225 Difference]: With dead ends: 5414 [2020-08-21 23:58:18,999 INFO L226 Difference]: Without dead ends: 3768 [2020-08-21 23:58:19,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2020-08-21 23:58:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3766. [2020-08-21 23:58:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-08-21 23:58:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5456 transitions. [2020-08-21 23:58:19,202 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5456 transitions. Word has length 155 [2020-08-21 23:58:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:19,203 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 5456 transitions. [2020-08-21 23:58:19,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:58:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5456 transitions. [2020-08-21 23:58:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 23:58:19,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:19,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:19,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:58:19,212 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:19,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:19,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1351457563, now seen corresponding path program 1 times [2020-08-21 23:58:19,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:19,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799690640] [2020-08-21 23:58:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:19,678 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:19,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799690640] [2020-08-21 23:58:19,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:19,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:58:19,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117898151] [2020-08-21 23:58:19,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:58:19,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:58:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:58:19,719 INFO L87 Difference]: Start difference. First operand 3766 states and 5456 transitions. Second operand 5 states. [2020-08-21 23:58:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:21,386 INFO L93 Difference]: Finished difference Result 7914 states and 11362 transitions. [2020-08-21 23:58:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:58:21,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-08-21 23:58:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:21,405 INFO L225 Difference]: With dead ends: 7914 [2020-08-21 23:58:21,405 INFO L226 Difference]: Without dead ends: 4004 [2020-08-21 23:58:21,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:58:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-08-21 23:58:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 4002. [2020-08-21 23:58:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-08-21 23:58:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 5698 transitions. [2020-08-21 23:58:21,636 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 5698 transitions. Word has length 155 [2020-08-21 23:58:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:21,637 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 5698 transitions. [2020-08-21 23:58:21,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:58:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 5698 transitions. [2020-08-21 23:58:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 23:58:21,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:21,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:21,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:58:21,645 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash 557114249, now seen corresponding path program 1 times [2020-08-21 23:58:21,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:21,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884161032] [2020-08-21 23:58:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:22,050 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:22,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884161032] [2020-08-21 23:58:22,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:22,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:58:22,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147353917] [2020-08-21 23:58:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:58:22,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:22,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:58:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:58:22,112 INFO L87 Difference]: Start difference. First operand 4002 states and 5698 transitions. Second operand 5 states. [2020-08-21 23:58:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:24,746 INFO L93 Difference]: Finished difference Result 5770 states and 8216 transitions. [2020-08-21 23:58:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:58:24,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-08-21 23:58:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:24,762 INFO L225 Difference]: With dead ends: 5770 [2020-08-21 23:58:24,762 INFO L226 Difference]: Without dead ends: 4004 [2020-08-21 23:58:24,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:58:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-08-21 23:58:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3766. [2020-08-21 23:58:24,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-08-21 23:58:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5400 transitions. [2020-08-21 23:58:24,946 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5400 transitions. Word has length 155 [2020-08-21 23:58:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:24,947 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 5400 transitions. [2020-08-21 23:58:24,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:58:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5400 transitions. [2020-08-21 23:58:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 23:58:24,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:24,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:24,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:58:24,955 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:24,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:24,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1983484075, now seen corresponding path program 1 times [2020-08-21 23:58:24,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:24,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762284293] [2020-08-21 23:58:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:25,206 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:25,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762284293] [2020-08-21 23:58:25,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:25,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:58:25,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492424099] [2020-08-21 23:58:25,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:58:25,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:25,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:58:25,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:25,241 INFO L87 Difference]: Start difference. First operand 3766 states and 5400 transitions. Second operand 4 states. [2020-08-21 23:58:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:27,427 INFO L93 Difference]: Finished difference Result 9190 states and 13162 transitions. [2020-08-21 23:58:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:58:27,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-08-21 23:58:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:27,458 INFO L225 Difference]: With dead ends: 9190 [2020-08-21 23:58:27,458 INFO L226 Difference]: Without dead ends: 7424 [2020-08-21 23:58:27,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:58:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2020-08-21 23:58:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 3774. [2020-08-21 23:58:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-08-21 23:58:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5408 transitions. [2020-08-21 23:58:27,751 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5408 transitions. Word has length 156 [2020-08-21 23:58:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:27,752 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 5408 transitions. [2020-08-21 23:58:27,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:58:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5408 transitions. [2020-08-21 23:58:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 23:58:27,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:27,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:27,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:58:27,759 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:27,760 INFO L82 PathProgramCache]: Analyzing trace with hash -415240646, now seen corresponding path program 1 times [2020-08-21 23:58:27,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:27,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267920326] [2020-08-21 23:58:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:28,086 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-21 23:58:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:58:28,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267920326] [2020-08-21 23:58:28,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:28,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:58:28,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754399303] [2020-08-21 23:58:28,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:58:28,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:28,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:58:28,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:58:28,140 INFO L87 Difference]: Start difference. First operand 3774 states and 5408 transitions. Second operand 5 states. [2020-08-21 23:58:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:30,830 INFO L93 Difference]: Finished difference Result 10940 states and 15613 transitions. [2020-08-21 23:58:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:58:30,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-08-21 23:58:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:30,846 INFO L225 Difference]: With dead ends: 10940 [2020-08-21 23:58:30,846 INFO L226 Difference]: Without dead ends: 7213 [2020-08-21 23:58:30,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:58:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7213 states. [2020-08-21 23:58:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7213 to 7211. [2020-08-21 23:58:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7211 states. [2020-08-21 23:58:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 10180 transitions. [2020-08-21 23:58:31,191 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 10180 transitions. Word has length 157 [2020-08-21 23:58:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:31,191 INFO L479 AbstractCegarLoop]: Abstraction has 7211 states and 10180 transitions. [2020-08-21 23:58:31,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:58:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 10180 transitions. [2020-08-21 23:58:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 23:58:31,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:31,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:58:31,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:58:31,204 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 725013288, now seen corresponding path program 1 times [2020-08-21 23:58:31,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:31,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755192737] [2020-08-21 23:58:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:58:31,277 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:58:31,278 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:58:31,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:58:31,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:58:31 BoogieIcfgContainer [2020-08-21 23:58:31,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:58:31,340 INFO L168 Benchmark]: Toolchain (without parser) took 34108.38 ms. Allocated memory was 141.6 MB in the beginning and 677.4 MB in the end (delta: 535.8 MB). Free memory was 103.2 MB in the beginning and 147.0 MB in the end (delta: -43.8 MB). Peak memory consumption was 492.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:58:31,341 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:58:31,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1143.37 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 103.0 MB in the beginning and 165.0 MB in the end (delta: -62.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:58:31,343 INFO L168 Benchmark]: Boogie Preprocessor took 94.94 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 160.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:58:31,343 INFO L168 Benchmark]: RCFGBuilder took 1560.77 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 160.3 MB in the beginning and 135.8 MB in the end (delta: 24.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:58:31,344 INFO L168 Benchmark]: TraceAbstraction took 31304.76 ms. Allocated memory was 234.9 MB in the beginning and 677.4 MB in the end (delta: 442.5 MB). Free memory was 135.8 MB in the beginning and 147.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 431.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:58:31,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1143.37 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 103.0 MB in the beginning and 165.0 MB in the end (delta: -62.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.94 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 160.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1560.77 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 160.3 MB in the beginning and 135.8 MB in the end (delta: 24.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31304.76 ms. Allocated memory was 234.9 MB in the beginning and 677.4 MB in the end (delta: 442.5 MB). Free memory was 135.8 MB in the beginning and 147.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 431.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 891]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] _Bool newmax1 = 0; [L47] char id2 = '\x0'; [L48] char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] _Bool newmax2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L62] _Bool newmax3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1863; [L71] int __return_2009; [L72] int __return_2142; [L73] int __return_2281; [L74] int __return_2419; [L75] int __tmp_2420_0; [L76] int __return_2543; [L77] int __return_2433; [L80] int main__c1; [L81] int main__i2; [L82] main__c1 = 0 [L83] ep12 = __VERIFIER_nondet_bool() [L84] ep13 = __VERIFIER_nondet_bool() [L85] ep21 = __VERIFIER_nondet_bool() [L86] ep23 = __VERIFIER_nondet_bool() [L87] ep31 = __VERIFIER_nondet_bool() [L88] ep32 = __VERIFIER_nondet_bool() [L89] id1 = __VERIFIER_nondet_char() [L90] r1 = __VERIFIER_nondet_char() [L91] st1 = __VERIFIER_nondet_char() [L92] nl1 = __VERIFIER_nondet_char() [L93] m1 = __VERIFIER_nondet_char() [L94] max1 = __VERIFIER_nondet_char() [L95] mode1 = __VERIFIER_nondet_bool() [L96] newmax1 = __VERIFIER_nondet_bool() [L97] id2 = __VERIFIER_nondet_char() [L98] r2 = __VERIFIER_nondet_char() [L99] st2 = __VERIFIER_nondet_char() [L100] nl2 = __VERIFIER_nondet_char() [L101] m2 = __VERIFIER_nondet_char() [L102] max2 = __VERIFIER_nondet_char() [L103] mode2 = __VERIFIER_nondet_bool() [L104] newmax2 = __VERIFIER_nondet_bool() [L105] id3 = __VERIFIER_nondet_char() [L106] r3 = __VERIFIER_nondet_char() [L107] st3 = __VERIFIER_nondet_char() [L108] nl3 = __VERIFIER_nondet_char() [L109] m3 = __VERIFIER_nondet_char() [L110] max3 = __VERIFIER_nondet_char() [L111] mode3 = __VERIFIER_nondet_bool() [L112] newmax3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2433] COND FALSE !(!(init__r131 == 0)) [L2449] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2410] COND FALSE !(!(init__r121 == 0)) [L2426] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2387] COND FALSE !(!(init__r231 == 0)) [L2403] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2364] COND FALSE !(!(init__r211 == 0)) [L2380] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2341] COND FALSE !(!(init__r321 == 0)) [L2357] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2318] COND FALSE !(!(init__r311 == 0)) [L2334] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] COND TRUE !(newmax1 == 0) [L213] COND TRUE !(newmax2 == 0) [L215] COND TRUE !(newmax3 == 0) [L217] init__tmp___5 = 1 [L218] __return_1863 = init__tmp___5 [L219] main__i2 = __return_1863 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L235] COND TRUE main__i2 < 6 [L238] _Bool node1__newmax; [L239] node1__newmax = 0 [L240] COND FALSE !(!(mode1 == 0)) [L246] COND TRUE ((int)r1) < 2 [L248] COND FALSE !(!(ep12 == 0)) [L261] COND FALSE !(!(ep13 == 0)) [L274] mode1 = 1 [L276] _Bool node2__newmax; [L277] node2__newmax = 0 [L278] COND FALSE !(!(mode2 == 0)) [L284] COND TRUE ((int)r2) < 2 [L286] COND FALSE !(!(ep21 == 0)) [L299] COND FALSE !(!(ep23 == 0)) [L312] mode2 = 1 [L314] _Bool node3__newmax; [L315] node3__newmax = 0 [L316] COND FALSE !(!(mode3 == 0)) [L322] COND TRUE ((int)r3) < 2 [L324] COND FALSE !(!(ep31 == 0)) [L337] COND FALSE !(!(ep32 == 0)) [L350] mode3 = 1 [L351] p12_old = p12_new [L352] p12_new = nomsg [L353] p13_old = p13_new [L354] p13_new = nomsg [L355] p21_old = p21_new [L356] p21_new = nomsg [L357] p23_old = p23_new [L358] p23_new = nomsg [L359] p31_old = p31_new [L360] p31_new = nomsg [L361] p32_old = p32_new [L362] p32_new = nomsg [L364] int check__tmp; [L365] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L367] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L369] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L371] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L373] COND FALSE !(((int)r1) >= 2) [L379] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L381] COND TRUE ((int)r1) < 2 [L383] COND FALSE !(((int)r1) >= 2) [L389] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L391] COND TRUE ((int)r1) < 2 [L393] check__tmp = 1 [L394] __return_2009 = check__tmp [L395] main__c1 = __return_2009 [L397] _Bool __tmp_1; [L398] __tmp_1 = main__c1 [L399] _Bool assert__arg; [L400] assert__arg = __tmp_1 [L401] COND FALSE !(assert__arg == 0) [L407] int main____CPAchecker_TMP_0 = main__i2; [L408] main__i2 = main__i2 + 1 [L409] COND TRUE main__i2 < 6 [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] r1 = (char)(((int)r1) + 1) [L417] COND FALSE !(!(ep21 == 0)) [L426] COND FALSE !(!(ep31 == 0)) [L435] newmax1 = node1__newmax [L436] COND FALSE !(((int)r1) == 2) [L442] mode1 = 0 [L444] _Bool node2__newmax; [L445] node2__newmax = 0 [L446] COND TRUE !(mode2 == 0) [L448] r2 = (char)(((int)r2) + 1) [L449] COND FALSE !(!(ep12 == 0)) [L458] COND FALSE !(!(ep32 == 0)) [L467] newmax2 = node2__newmax [L468] COND FALSE !(((int)r2) == 2) [L474] mode2 = 0 [L476] _Bool node3__newmax; [L477] node3__newmax = 0 [L478] COND TRUE !(mode3 == 0) [L480] r3 = (char)(((int)r3) + 1) [L481] COND FALSE !(!(ep13 == 0)) [L490] COND FALSE !(!(ep23 == 0)) [L499] newmax3 = node3__newmax [L500] COND FALSE !(((int)r3) == 2) [L506] mode3 = 0 [L507] p12_old = p12_new [L508] p12_new = nomsg [L509] p13_old = p13_new [L510] p13_new = nomsg [L511] p21_old = p21_new [L512] p21_new = nomsg [L513] p23_old = p23_new [L514] p23_new = nomsg [L515] p31_old = p31_new [L516] p31_new = nomsg [L517] p32_old = p32_new [L518] p32_new = nomsg [L520] int check__tmp; [L521] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L523] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L525] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L527] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L529] COND FALSE !(((int)r1) >= 2) [L535] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L537] COND TRUE ((int)r1) < 2 [L539] COND FALSE !(((int)r1) >= 2) [L545] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L547] COND TRUE ((int)r1) < 2 [L549] check__tmp = 1 [L550] __return_2142 = check__tmp [L551] main__c1 = __return_2142 [L553] _Bool __tmp_2; [L554] __tmp_2 = main__c1 [L555] _Bool assert__arg; [L556] assert__arg = __tmp_2 [L557] COND FALSE !(assert__arg == 0) [L563] int main____CPAchecker_TMP_0 = main__i2; [L564] main__i2 = main__i2 + 1 [L565] COND TRUE main__i2 < 6 [L568] _Bool node1__newmax; [L569] node1__newmax = 0 [L570] COND FALSE !(!(mode1 == 0)) [L576] COND TRUE ((int)r1) < 2 [L578] COND FALSE !(!(ep12 == 0)) [L591] COND FALSE !(!(ep13 == 0)) [L604] mode1 = 1 [L606] _Bool node2__newmax; [L607] node2__newmax = 0 [L608] COND FALSE !(!(mode2 == 0)) [L614] COND TRUE ((int)r2) < 2 [L616] COND FALSE !(!(ep21 == 0)) [L629] COND FALSE !(!(ep23 == 0)) [L642] mode2 = 1 [L644] _Bool node3__newmax; [L645] node3__newmax = 0 [L646] COND FALSE !(!(mode3 == 0)) [L652] COND TRUE ((int)r3) < 2 [L654] COND FALSE !(!(ep31 == 0)) [L667] COND FALSE !(!(ep32 == 0)) [L680] mode3 = 1 [L681] p12_old = p12_new [L682] p12_new = nomsg [L683] p13_old = p13_new [L684] p13_new = nomsg [L685] p21_old = p21_new [L686] p21_new = nomsg [L687] p23_old = p23_new [L688] p23_new = nomsg [L689] p31_old = p31_new [L690] p31_new = nomsg [L691] p32_old = p32_new [L692] p32_new = nomsg [L694] int check__tmp; [L695] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L697] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L699] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L701] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L703] COND FALSE !(((int)r1) >= 2) [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L711] COND TRUE ((int)r1) < 2 [L713] COND FALSE !(((int)r1) >= 2) [L719] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L721] COND TRUE ((int)r1) < 2 [L723] check__tmp = 1 [L724] __return_2281 = check__tmp [L725] main__c1 = __return_2281 [L727] _Bool __tmp_3; [L728] __tmp_3 = main__c1 [L729] _Bool assert__arg; [L730] assert__arg = __tmp_3 [L731] COND FALSE !(assert__arg == 0) [L737] int main____CPAchecker_TMP_0 = main__i2; [L738] main__i2 = main__i2 + 1 [L739] COND TRUE main__i2 < 6 [L742] _Bool node1__newmax; [L743] node1__newmax = 0 [L744] COND TRUE !(mode1 == 0) [L746] r1 = (char)(((int)r1) + 1) [L747] COND FALSE !(!(ep21 == 0)) [L756] COND FALSE !(!(ep31 == 0)) [L765] newmax1 = node1__newmax [L766] COND TRUE ((int)r1) == 2 [L768] COND TRUE ((int)max1) == ((int)id1) [L770] st1 = 1 [L772] mode1 = 0 [L774] _Bool node2__newmax; [L775] node2__newmax = 0 [L776] COND TRUE !(mode2 == 0) [L778] r2 = (char)(((int)r2) + 1) [L779] COND FALSE !(!(ep12 == 0)) [L788] COND FALSE !(!(ep32 == 0)) [L797] newmax2 = node2__newmax [L798] COND TRUE ((int)r2) == 2 [L800] COND TRUE ((int)max2) == ((int)id2) [L802] st2 = 1 [L804] mode2 = 0 [L806] _Bool node3__newmax; [L807] node3__newmax = 0 [L808] COND TRUE !(mode3 == 0) [L810] r3 = (char)(((int)r3) + 1) [L811] COND FALSE !(!(ep13 == 0)) [L820] COND FALSE !(!(ep23 == 0)) [L829] newmax3 = node3__newmax [L830] COND TRUE ((int)r3) == 2 [L832] COND TRUE ((int)max3) == ((int)id3) [L834] st3 = 1 [L836] mode3 = 0 [L837] p12_old = p12_new [L838] p12_new = nomsg [L839] p13_old = p13_new [L840] p13_new = nomsg [L841] p21_old = p21_new [L842] p21_new = nomsg [L843] p23_old = p23_new [L844] p23_new = nomsg [L845] p31_old = p31_new [L846] p31_new = nomsg [L847] p32_old = p32_new [L848] p32_new = nomsg [L850] int check__tmp; [L851] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1533] check__tmp = 0 [L879] __return_2419 = check__tmp [L880] main__c1 = __return_2419 [L881] __tmp_2420_0 = main____CPAchecker_TMP_0 [L883] main____CPAchecker_TMP_0 = __tmp_2420_0 [L885] _Bool __tmp_4; [L886] __tmp_4 = main__c1 [L887] _Bool assert__arg; [L888] assert__arg = __tmp_4 [L889] COND TRUE assert__arg == 0 [L891] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 340 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 23.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7616 SDtfs, 7275 SDslu, 4541 SDs, 0 SdLazy, 8012 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7211occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 6824 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1696 NumberOfCodeBlocks, 1696 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1529 ConstructedInterpolants, 0 QuantifiedInterpolants, 819795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 incorrect! Received shutdown request...