/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=HIGHLEXORDER --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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:07:12,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:07:12,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:07:12,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:07:12,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:07:12,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:07:12,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:07:12,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:07:12,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:07:12,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:07:12,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:07:12,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:07:12,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:07:12,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:07:12,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:07:12,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:07:12,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:07:12,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:07:12,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:07:12,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:07:12,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:07:12,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:07:12,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:07:12,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:07:12,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 19:07:12,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:07:13,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:07:13,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:07:13,004 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 19:07:13,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:07:13,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:07:13,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:07:13,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:07:13,044 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:07:13,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:07:13,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:07:13,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:07:13,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:07:13,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:07:13,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:07:13,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:07:13,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:07:13,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:07:13,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:07:13,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:07:13,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:07:13,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:07:13,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:07:13,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:07:13,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:07:13,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:07:13,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:07:13,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:07:13,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:07:13,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:07:13,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:07:13,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:07:13,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:07:13,051 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:07:13,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:07:13,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:07:13,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:07:13,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:07:13,371 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:07:13,372 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-21 19:07:13,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cf1f8dc2/22ab9d4598c3488b9fabf6b16e7deffe/FLAGd81e5dd97 [2020-08-21 19:07:13,994 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:07:13,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-21 19:07:14,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cf1f8dc2/22ab9d4598c3488b9fabf6b16e7deffe/FLAGd81e5dd97 [2020-08-21 19:07:14,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cf1f8dc2/22ab9d4598c3488b9fabf6b16e7deffe [2020-08-21 19:07:14,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:07:14,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:07:14,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:07:14,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:07:14,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:07:14,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:07:14" (1/1) ... [2020-08-21 19:07:14,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75883cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:14, skipping insertion in model container [2020-08-21 19:07:14,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:07:14" (1/1) ... [2020-08-21 19:07:14,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:07:14,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:07:14,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:07:14,987 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:07:15,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:07:15,500 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:07:15,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15 WrapperNode [2020-08-21 19:07:15,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:07:15,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:07:15,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:07:15,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:07:15,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (1/1) ... [2020-08-21 19:07:15,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:07:15,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:07:15,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:07:15,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:07:15,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (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 19:07:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:07:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:07:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:07:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:07:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:07:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 19:07:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 19:07:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 19:07:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:07:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:07:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 19:07:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 19:07:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 19:07:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 19:07:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 19:07:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 19:07:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 19:07:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:07:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:07:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:07:17,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:07:17,377 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 19:07:17,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:07:17 BoogieIcfgContainer [2020-08-21 19:07:17,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:07:17,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:07:17,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:07:17,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:07:17,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:07:14" (1/3) ... [2020-08-21 19:07:17,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd7d3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:07:17, skipping insertion in model container [2020-08-21 19:07:17,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:07:15" (2/3) ... [2020-08-21 19:07:17,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd7d3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:07:17, skipping insertion in model container [2020-08-21 19:07:17,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:07:17" (3/3) ... [2020-08-21 19:07:17,397 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-21 19:07:17,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:07:17,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-21 19:07:17,435 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-21 19:07:17,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:07:17,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:07:17,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:07:17,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:07:17,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:07:17,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:07:17,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:07:17,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:07:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-21 19:07:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 19:07:17,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:17,539 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] [2020-08-21 19:07:17,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-21 19:07:17,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:17,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954123270] [2020-08-21 19:07:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:18,510 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:18,611 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 19:07:18,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954123270] [2020-08-21 19:07:18,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:18,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:18,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871717594] [2020-08-21 19:07:18,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:18,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:18,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:18,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:18,640 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-21 19:07:18,954 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-21 19:07:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:21,714 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-21 19:07:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:21,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-21 19:07:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:21,738 INFO L225 Difference]: With dead ends: 754 [2020-08-21 19:07:21,738 INFO L226 Difference]: Without dead ends: 593 [2020-08-21 19:07:21,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-21 19:07:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-21 19:07:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-21 19:07:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-21 19:07:21,841 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-21 19:07:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:21,842 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-21 19:07:21,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:07:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-21 19:07:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 19:07:21,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:21,851 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] [2020-08-21 19:07:21,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:07:21,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:21,852 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-21 19:07:21,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:21,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415946300] [2020-08-21 19:07:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:22,372 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:22,457 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 19:07:22,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415946300] [2020-08-21 19:07:22,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:22,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:22,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071316022] [2020-08-21 19:07:22,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:22,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:22,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:22,462 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-21 19:07:22,823 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-21 19:07:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:24,889 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-21 19:07:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:24,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-21 19:07:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:24,897 INFO L225 Difference]: With dead ends: 1190 [2020-08-21 19:07:24,897 INFO L226 Difference]: Without dead ends: 961 [2020-08-21 19:07:24,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-21 19:07:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-21 19:07:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-21 19:07:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-21 19:07:24,951 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-21 19:07:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:24,952 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-21 19:07:24,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:07:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-21 19:07:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 19:07:24,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:24,956 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] [2020-08-21 19:07:24,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:07:24,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-21 19:07:24,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:24,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060544954] [2020-08-21 19:07:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:25,365 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:25,408 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 19:07:25,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060544954] [2020-08-21 19:07:25,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:25,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:25,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114386411] [2020-08-21 19:07:25,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:25,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:25,411 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-21 19:07:25,673 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-21 19:07:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:28,007 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-21 19:07:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:28,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-21 19:07:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:28,026 INFO L225 Difference]: With dead ends: 2090 [2020-08-21 19:07:28,026 INFO L226 Difference]: Without dead ends: 1701 [2020-08-21 19:07:28,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-21 19:07:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-21 19:07:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-21 19:07:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-21 19:07:28,179 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-21 19:07:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:28,180 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-21 19:07:28,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:07:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-21 19:07:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 19:07:28,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:28,186 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] [2020-08-21 19:07:28,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:07:28,188 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:28,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-21 19:07:28,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:28,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349749594] [2020-08-21 19:07:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:28,705 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:28,755 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 19:07:28,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349749594] [2020-08-21 19:07:28,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:28,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:07:28,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529382360] [2020-08-21 19:07:28,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:07:28,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:28,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:07:28,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:28,758 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-21 19:07:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:31,983 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-21 19:07:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:31,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-21 19:07:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:32,003 INFO L225 Difference]: With dead ends: 4967 [2020-08-21 19:07:32,004 INFO L226 Difference]: Without dead ends: 3281 [2020-08-21 19:07:32,009 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 19:07:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-21 19:07:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-21 19:07:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-21 19:07:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-21 19:07:32,174 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-21 19:07:32,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:32,175 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-21 19:07:32,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:07:32,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-21 19:07:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 19:07:32,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:32,181 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] [2020-08-21 19:07:32,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:07:32,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:32,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-21 19:07:32,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:32,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665282041] [2020-08-21 19:07:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:32,448 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:32,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:32,482 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 19:07:32,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665282041] [2020-08-21 19:07:32,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:32,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:32,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230813006] [2020-08-21 19:07:32,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:32,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:32,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:32,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:32,485 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-21 19:07:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:35,549 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-21 19:07:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:07:35,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-21 19:07:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:35,580 INFO L225 Difference]: With dead ends: 9659 [2020-08-21 19:07:35,581 INFO L226 Difference]: Without dead ends: 6456 [2020-08-21 19:07:35,588 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 19:07:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-21 19:07:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-21 19:07:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-21 19:07:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-21 19:07:35,772 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-21 19:07:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:35,773 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-21 19:07:35,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:07:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-21 19:07:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 19:07:35,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:35,779 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] [2020-08-21 19:07:35,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:07:35,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:35,780 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-21 19:07:35,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:35,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134482334] [2020-08-21 19:07:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:36,273 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:36,418 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 19:07:36,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134482334] [2020-08-21 19:07:36,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:36,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:07:36,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765838951] [2020-08-21 19:07:36,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:07:36,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:36,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:07:36,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:36,430 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-21 19:07:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:39,403 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-21 19:07:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:39,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-21 19:07:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:39,431 INFO L225 Difference]: With dead ends: 9441 [2020-08-21 19:07:39,432 INFO L226 Difference]: Without dead ends: 6238 [2020-08-21 19:07:39,438 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 19:07:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-21 19:07:39,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-21 19:07:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-21 19:07:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-21 19:07:39,721 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-21 19:07:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:39,721 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-21 19:07:39,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:07:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-21 19:07:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 19:07:39,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:39,732 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] [2020-08-21 19:07:39,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:07:39,733 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:39,733 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-21 19:07:39,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:39,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782055050] [2020-08-21 19:07:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:40,023 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:40,068 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 19:07:40,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782055050] [2020-08-21 19:07:40,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:40,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:40,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237807237] [2020-08-21 19:07:40,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:40,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:40,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:40,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:40,073 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-21 19:07:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:43,472 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-21 19:07:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:07:43,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-21 19:07:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:43,515 INFO L225 Difference]: With dead ends: 18492 [2020-08-21 19:07:43,515 INFO L226 Difference]: Without dead ends: 12348 [2020-08-21 19:07:43,528 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 19:07:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-21 19:07:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-21 19:07:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-21 19:07:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-21 19:07:43,813 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-21 19:07:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:43,813 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-21 19:07:43,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:07:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-21 19:07:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 19:07:43,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:43,823 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] [2020-08-21 19:07:43,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:07:43,823 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:43,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-21 19:07:43,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:43,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963592980] [2020-08-21 19:07:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:44,115 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:44,159 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 19:07:44,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963592980] [2020-08-21 19:07:44,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:44,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:44,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072090579] [2020-08-21 19:07:44,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:44,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:44,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:44,161 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-21 19:07:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:47,450 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-21 19:07:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:07:47,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-21 19:07:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:47,476 INFO L225 Difference]: With dead ends: 16495 [2020-08-21 19:07:47,476 INFO L226 Difference]: Without dead ends: 10615 [2020-08-21 19:07:47,486 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 19:07:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-21 19:07:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-21 19:07:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-21 19:07:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-21 19:07:47,917 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-21 19:07:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:47,918 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-21 19:07:47,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:07:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-21 19:07:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 19:07:47,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:47,933 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] [2020-08-21 19:07:47,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:07:47,933 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-21 19:07:47,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:47,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994701030] [2020-08-21 19:07:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:48,259 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:48,295 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 19:07:48,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994701030] [2020-08-21 19:07:48,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:48,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:07:48,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762110413] [2020-08-21 19:07:48,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:07:48,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:48,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:07:48,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:48,298 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-21 19:07:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:50,606 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-21 19:07:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:50,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-21 19:07:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:50,629 INFO L225 Difference]: With dead ends: 21564 [2020-08-21 19:07:50,630 INFO L226 Difference]: Without dead ends: 10851 [2020-08-21 19:07:50,647 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 19:07:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-21 19:07:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-21 19:07:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-21 19:07:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-21 19:07:51,180 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-21 19:07:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:51,180 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-21 19:07:51,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:07:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-21 19:07:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 19:07:51,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:51,193 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] [2020-08-21 19:07:51,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:07:51,193 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:51,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-21 19:07:51,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:51,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434037761] [2020-08-21 19:07:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:51,551 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:51,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:51,599 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 19:07:51,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434037761] [2020-08-21 19:07:51,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:51,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:07:51,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802127257] [2020-08-21 19:07:51,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:07:51,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:51,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:07:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:07:51,602 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-21 19:07:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:07:55,110 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-21 19:07:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:07:55,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-21 19:07:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:07:55,127 INFO L225 Difference]: With dead ends: 15230 [2020-08-21 19:07:55,127 INFO L226 Difference]: Without dead ends: 10851 [2020-08-21 19:07:55,135 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 19:07:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-21 19:07:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-21 19:07:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-21 19:07:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-21 19:07:55,609 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-21 19:07:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:07:55,610 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-21 19:07:55,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:07:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-21 19:07:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 19:07:55,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:07:55,620 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 19:07:55,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:07:55,621 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:07:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:07:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-21 19:07:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:07:55,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335339756] [2020-08-21 19:07:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:07:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:55,893 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:07:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:07:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:07:56,443 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 19:07:56,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335339756] [2020-08-21 19:07:56,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:07:56,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:07:56,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853723893] [2020-08-21 19:07:56,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:07:56,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:07:56,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:07:56,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:07:56,446 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-21 19:08:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:08:00,332 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-21 19:08:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:08:00,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-21 19:08:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:08:00,358 INFO L225 Difference]: With dead ends: 25409 [2020-08-21 19:08:00,358 INFO L226 Difference]: Without dead ends: 21030 [2020-08-21 19:08:00,369 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 19:08:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-21 19:08:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-21 19:08:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-21 19:08:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-21 19:08:00,876 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-21 19:08:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:08:00,876 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-21 19:08:00,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:08:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-21 19:08:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 19:08:00,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:08:00,884 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 19:08:00,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:08:00,884 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:08:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:08:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-21 19:08:00,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:08:00,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097480052] [2020-08-21 19:08:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:08:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:08:01,293 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:08:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:08:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:08:01,390 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 19:08:01,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097480052] [2020-08-21 19:08:01,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:08:01,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:08:01,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573208782] [2020-08-21 19:08:01,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:08:01,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:08:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:08:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:08:01,392 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-21 19:08:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:08:04,729 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-21 19:08:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:08:04,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 19:08:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:08:04,747 INFO L225 Difference]: With dead ends: 30843 [2020-08-21 19:08:04,747 INFO L226 Difference]: Without dead ends: 20313 [2020-08-21 19:08:04,762 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 19:08:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-21 19:08:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-21 19:08:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-21 19:08:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-21 19:08:05,504 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-21 19:08:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:08:05,505 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-21 19:08:05,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:08:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-21 19:08:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 19:08:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:08:05,518 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 19:08:05,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:08:05,518 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:08:05,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:08:05,519 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-21 19:08:05,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:08:05,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161731378] [2020-08-21 19:08:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:08:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:08:05,870 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:08:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:08:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:08:06,016 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 19:08:06,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161731378] [2020-08-21 19:08:06,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:08:06,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:08:06,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944749172] [2020-08-21 19:08:06,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:08:06,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:08:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:08:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:08:06,020 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-21 19:08:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:08:10,408 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-21 19:08:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:08:10,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 19:08:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:08:10,440 INFO L225 Difference]: With dead ends: 54646 [2020-08-21 19:08:10,440 INFO L226 Difference]: Without dead ends: 34484 [2020-08-21 19:08:10,460 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 19:08:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states. [2020-08-21 19:08:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34484 to 34424. [2020-08-21 19:08:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34424 states. [2020-08-21 19:08:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34424 states to 34424 states and 48378 transitions. [2020-08-21 19:08:11,955 INFO L78 Accepts]: Start accepts. Automaton has 34424 states and 48378 transitions. Word has length 152 [2020-08-21 19:08:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:08:11,956 INFO L479 AbstractCegarLoop]: Abstraction has 34424 states and 48378 transitions. [2020-08-21 19:08:11,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:08:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 34424 states and 48378 transitions. [2020-08-21 19:08:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 19:08:11,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:08:11,978 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 19:08:11,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 19:08:11,978 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:08:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:08:11,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1687005761, now seen corresponding path program 1 times [2020-08-21 19:08:11,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:08:11,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387932895] [2020-08-21 19:08:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:08:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:08:12,069 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:08:12,070 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:08:12,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 19:08:12,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:08:12 BoogieIcfgContainer [2020-08-21 19:08:12,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:08:12,172 INFO L168 Benchmark]: Toolchain (without parser) took 57938.08 ms. Allocated memory was 141.6 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 101.6 MB in the beginning and 410.9 MB in the end (delta: -309.4 MB). Peak memory consumption was 977.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:08:12,173 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:08:12,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1266.02 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 162.9 MB in the end (delta: -61.6 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:08:12,182 INFO L168 Benchmark]: Boogie Preprocessor took 160.23 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 157.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:08:12,184 INFO L168 Benchmark]: RCFGBuilder took 1722.59 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 157.5 MB in the beginning and 92.1 MB in the end (delta: 65.5 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:08:12,185 INFO L168 Benchmark]: TraceAbstraction took 54784.48 ms. Allocated memory was 235.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 92.1 MB in the beginning and 410.9 MB in the end (delta: -318.9 MB). Peak memory consumption was 873.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:08:12,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1266.02 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 162.9 MB in the end (delta: -61.6 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.23 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 157.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1722.59 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 157.5 MB in the beginning and 92.1 MB in the end (delta: 65.5 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 54784.48 ms. Allocated memory was 235.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 92.1 MB in the beginning and 410.9 MB in the end (delta: -318.9 MB). Peak memory consumption was 873.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: 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_3069; [L75] int __return_3038; [L76] int __return_2975; [L77] int __return_2941; [L78] int __tmp_2420_0; [L79] int __return_2543; [L80] int __return_2433; [L81] int __return_2828; [L82] int __return_2794; [L83] int __return_2710; [L84] int __return_2419; [L87] int main__c1; [L88] int main__i2; [L89] main__c1 = 0 [L90] ep12 = __VERIFIER_nondet_bool() [L91] ep13 = __VERIFIER_nondet_bool() [L92] ep21 = __VERIFIER_nondet_bool() [L93] ep23 = __VERIFIER_nondet_bool() [L94] ep31 = __VERIFIER_nondet_bool() [L95] ep32 = __VERIFIER_nondet_bool() [L96] id1 = __VERIFIER_nondet_char() [L97] r1 = __VERIFIER_nondet_char() [L98] st1 = __VERIFIER_nondet_char() [L99] nl1 = __VERIFIER_nondet_char() [L100] m1 = __VERIFIER_nondet_char() [L101] max1 = __VERIFIER_nondet_char() [L102] mode1 = __VERIFIER_nondet_bool() [L103] newmax1 = __VERIFIER_nondet_bool() [L104] id2 = __VERIFIER_nondet_char() [L105] r2 = __VERIFIER_nondet_char() [L106] st2 = __VERIFIER_nondet_char() [L107] nl2 = __VERIFIER_nondet_char() [L108] m2 = __VERIFIER_nondet_char() [L109] max2 = __VERIFIER_nondet_char() [L110] mode2 = __VERIFIER_nondet_bool() [L111] newmax2 = __VERIFIER_nondet_bool() [L112] id3 = __VERIFIER_nondet_char() [L113] r3 = __VERIFIER_nondet_char() [L114] st3 = __VERIFIER_nondet_char() [L115] nl3 = __VERIFIER_nondet_char() [L116] m3 = __VERIFIER_nondet_char() [L117] max3 = __VERIFIER_nondet_char() [L118] mode3 = __VERIFIER_nondet_bool() [L119] newmax3 = __VERIFIER_nondet_bool() [L121] _Bool init__r121; [L122] _Bool init__r131; [L123] _Bool init__r211; [L124] _Bool init__r231; [L125] _Bool init__r311; [L126] _Bool init__r321; [L127] _Bool init__r122; [L128] int init__tmp; [L129] _Bool init__r132; [L130] int init__tmp___0; [L131] _Bool init__r212; [L132] int init__tmp___1; [L133] _Bool init__r232; [L134] int init__tmp___2; [L135] _Bool init__r312; [L136] int init__tmp___3; [L137] _Bool init__r322; [L138] int init__tmp___4; [L139] int init__tmp___5; [L140] init__r121 = ep12 [L141] init__r131 = ep13 [L142] init__r211 = ep21 [L143] init__r231 = ep23 [L144] init__r311 = ep31 [L145] init__r321 = ep32 [L146] COND FALSE !(!(init__r121 == 0)) [L3140] COND FALSE !(!(init__r131 == 0)) [L3156] init__tmp = 0 [L150] init__r122 = (_Bool)init__tmp [L151] COND FALSE !(!(init__r131 == 0)) [L3117] COND FALSE !(!(init__r121 == 0)) [L3133] init__tmp___0 = 0 [L155] init__r132 = (_Bool)init__tmp___0 [L156] COND FALSE !(!(init__r211 == 0)) [L3094] COND FALSE !(!(init__r231 == 0)) [L3110] init__tmp___1 = 0 [L160] init__r212 = (_Bool)init__tmp___1 [L161] COND FALSE !(!(init__r231 == 0)) [L3071] COND FALSE !(!(init__r211 == 0)) [L3087] init__tmp___2 = 0 [L165] init__r232 = (_Bool)init__tmp___2 [L166] COND FALSE !(!(init__r311 == 0)) [L3048] COND FALSE !(!(init__r321 == 0)) [L3064] init__tmp___3 = 0 [L170] init__r312 = (_Bool)init__tmp___3 [L171] COND FALSE !(!(init__r321 == 0)) [L3025] COND FALSE !(!(init__r311 == 0)) [L3041] init__tmp___4 = 0 [L175] init__r322 = (_Bool)init__tmp___4 [L176] COND TRUE ((int)id1) != ((int)id2) [L178] COND TRUE ((int)id1) != ((int)id3) [L180] COND TRUE ((int)id2) != ((int)id3) [L182] COND TRUE ((int)id1) >= 0 [L184] COND TRUE ((int)id2) >= 0 [L186] COND TRUE ((int)id3) >= 0 [L188] COND TRUE ((int)r1) == 0 [L190] COND TRUE ((int)r2) == 0 [L192] COND TRUE ((int)r3) == 0 [L194] COND TRUE ((int)max1) == ((int)id1) [L196] COND TRUE ((int)max2) == ((int)id2) [L198] COND TRUE ((int)max3) == ((int)id3) [L200] COND TRUE ((int)st1) == 0 [L202] COND TRUE ((int)st2) == 0 [L204] COND TRUE ((int)st3) == 0 [L206] COND TRUE ((int)nl1) == 0 [L208] COND TRUE ((int)nl2) == 0 [L210] COND TRUE ((int)nl3) == 0 [L212] COND TRUE ((int)mode1) == 0 [L214] COND TRUE ((int)mode2) == 0 [L216] COND TRUE ((int)mode3) == 0 [L218] COND TRUE !(newmax1 == 0) [L220] COND TRUE !(newmax2 == 0) [L222] COND TRUE !(newmax3 == 0) [L224] init__tmp___5 = 1 [L225] __return_1863 = init__tmp___5 [L226] main__i2 = __return_1863 [L227] COND TRUE main__i2 != 0 [L229] p12_old = nomsg [L230] p12_new = nomsg [L231] p13_old = nomsg [L232] p13_new = nomsg [L233] p21_old = nomsg [L234] p21_new = nomsg [L235] p23_old = nomsg [L236] p23_new = nomsg [L237] p31_old = nomsg [L238] p31_new = nomsg [L239] p32_old = nomsg [L240] p32_new = nomsg [L241] main__i2 = 0 [L242] COND TRUE main__i2 < 6 [L245] _Bool node1__newmax; [L246] node1__newmax = 0 [L247] COND FALSE !(!(mode1 == 0)) [L253] COND TRUE ((int)r1) < 2 [L255] COND FALSE !(!(ep12 == 0)) [L268] COND FALSE !(!(ep13 == 0)) [L281] mode1 = 1 [L283] _Bool node2__newmax; [L284] node2__newmax = 0 [L285] COND FALSE !(!(mode2 == 0)) [L291] COND TRUE ((int)r2) < 2 [L293] COND FALSE !(!(ep21 == 0)) [L306] COND FALSE !(!(ep23 == 0)) [L319] mode2 = 1 [L321] _Bool node3__newmax; [L322] node3__newmax = 0 [L323] COND FALSE !(!(mode3 == 0)) [L329] COND TRUE ((int)r3) < 2 [L331] COND FALSE !(!(ep31 == 0)) [L344] COND FALSE !(!(ep32 == 0)) [L357] mode3 = 1 [L358] p12_old = p12_new [L359] p12_new = nomsg [L360] p13_old = p13_new [L361] p13_new = nomsg [L362] p21_old = p21_new [L363] p21_new = nomsg [L364] p23_old = p23_new [L365] p23_new = nomsg [L366] p31_old = p31_new [L367] p31_new = nomsg [L368] p32_old = p32_new [L369] p32_new = nomsg [L371] int check__tmp; [L372] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L374] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L376] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L378] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L380] COND FALSE !(((int)r1) >= 2) [L386] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L388] COND TRUE ((int)r1) < 2 [L390] COND FALSE !(((int)r1) >= 2) [L396] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L398] COND TRUE ((int)r1) < 2 [L400] check__tmp = 1 [L401] __return_2009 = check__tmp [L402] main__c1 = __return_2009 [L404] _Bool __tmp_1; [L405] __tmp_1 = main__c1 [L406] _Bool assert__arg; [L407] assert__arg = __tmp_1 [L408] COND FALSE !(assert__arg == 0) [L414] int main____CPAchecker_TMP_0 = main__i2; [L415] main__i2 = main__i2 + 1 [L416] COND TRUE main__i2 < 6 [L419] _Bool node1__newmax; [L420] node1__newmax = 0 [L421] COND TRUE !(mode1 == 0) [L423] r1 = (char)(((int)r1) + 1) [L424] COND FALSE !(!(ep21 == 0)) [L433] COND FALSE !(!(ep31 == 0)) [L442] newmax1 = node1__newmax [L443] COND FALSE !(((int)r1) == 2) [L449] mode1 = 0 [L451] _Bool node2__newmax; [L452] node2__newmax = 0 [L453] COND TRUE !(mode2 == 0) [L455] r2 = (char)(((int)r2) + 1) [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] r3 = (char)(((int)r3) + 1) [L488] COND FALSE !(!(ep13 == 0)) [L497] COND FALSE !(!(ep23 == 0)) [L506] newmax3 = node3__newmax [L507] COND FALSE !(((int)r3) == 2) [L513] mode3 = 0 [L514] p12_old = p12_new [L515] p12_new = nomsg [L516] p13_old = p13_new [L517] p13_new = nomsg [L518] p21_old = p21_new [L519] p21_new = nomsg [L520] p23_old = p23_new [L521] p23_new = nomsg [L522] p31_old = p31_new [L523] p31_new = nomsg [L524] p32_old = p32_new [L525] p32_new = nomsg [L527] int check__tmp; [L528] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L530] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L532] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L534] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L536] COND FALSE !(((int)r1) >= 2) [L542] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L544] COND TRUE ((int)r1) < 2 [L546] COND FALSE !(((int)r1) >= 2) [L552] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L554] COND TRUE ((int)r1) < 2 [L556] check__tmp = 1 [L557] __return_2142 = check__tmp [L558] main__c1 = __return_2142 [L560] _Bool __tmp_2; [L561] __tmp_2 = main__c1 [L562] _Bool assert__arg; [L563] assert__arg = __tmp_2 [L564] COND FALSE !(assert__arg == 0) [L570] int main____CPAchecker_TMP_0 = main__i2; [L571] main__i2 = main__i2 + 1 [L572] COND TRUE main__i2 < 6 [L575] _Bool node1__newmax; [L576] node1__newmax = 0 [L577] COND FALSE !(!(mode1 == 0)) [L583] COND TRUE ((int)r1) < 2 [L585] COND FALSE !(!(ep12 == 0)) [L598] COND FALSE !(!(ep13 == 0)) [L611] mode1 = 1 [L613] _Bool node2__newmax; [L614] node2__newmax = 0 [L615] COND FALSE !(!(mode2 == 0)) [L621] COND TRUE ((int)r2) < 2 [L623] COND FALSE !(!(ep21 == 0)) [L636] COND FALSE !(!(ep23 == 0)) [L649] mode2 = 1 [L651] _Bool node3__newmax; [L652] node3__newmax = 0 [L653] COND FALSE !(!(mode3 == 0)) [L659] COND TRUE ((int)r3) < 2 [L661] COND FALSE !(!(ep31 == 0)) [L674] COND FALSE !(!(ep32 == 0)) [L687] mode3 = 1 [L688] p12_old = p12_new [L689] p12_new = nomsg [L690] p13_old = p13_new [L691] p13_new = nomsg [L692] p21_old = p21_new [L693] p21_new = nomsg [L694] p23_old = p23_new [L695] p23_new = nomsg [L696] p31_old = p31_new [L697] p31_new = nomsg [L698] p32_old = p32_new [L699] p32_new = nomsg [L701] int check__tmp; [L702] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L704] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L706] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L708] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L710] COND FALSE !(((int)r1) >= 2) [L716] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L718] COND TRUE ((int)r1) < 2 [L720] COND FALSE !(((int)r1) >= 2) [L726] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L728] COND TRUE ((int)r1) < 2 [L730] check__tmp = 1 [L731] __return_2281 = check__tmp [L732] main__c1 = __return_2281 [L734] _Bool __tmp_3; [L735] __tmp_3 = main__c1 [L736] _Bool assert__arg; [L737] assert__arg = __tmp_3 [L738] COND FALSE !(assert__arg == 0) [L744] int main____CPAchecker_TMP_0 = main__i2; [L745] main__i2 = main__i2 + 1 [L746] COND TRUE main__i2 < 6 [L749] _Bool node1__newmax; [L750] node1__newmax = 0 [L751] COND TRUE !(mode1 == 0) [L753] r1 = (char)(((int)r1) + 1) [L754] COND FALSE !(!(ep21 == 0)) [L763] COND FALSE !(!(ep31 == 0)) [L772] newmax1 = node1__newmax [L773] COND TRUE ((int)r1) == 2 [L775] COND TRUE ((int)max1) == ((int)id1) [L777] st1 = 1 [L778] mode1 = 0 [L780] _Bool node2__newmax; [L781] node2__newmax = 0 [L782] COND TRUE !(mode2 == 0) [L784] r2 = (char)(((int)r2) + 1) [L785] COND FALSE !(!(ep12 == 0)) [L794] COND FALSE !(!(ep32 == 0)) [L803] newmax2 = node2__newmax [L804] COND TRUE ((int)r2) == 2 [L806] COND TRUE ((int)max2) == ((int)id2) [L808] st2 = 1 [L809] mode2 = 0 [L811] _Bool node3__newmax; [L812] node3__newmax = 0 [L813] COND TRUE !(mode3 == 0) [L815] r3 = (char)(((int)r3) + 1) [L816] COND FALSE !(!(ep13 == 0)) [L825] COND FALSE !(!(ep23 == 0)) [L834] newmax3 = node3__newmax [L835] COND TRUE ((int)r3) == 2 [L837] COND TRUE ((int)max3) == ((int)id3) [L839] st3 = 1 [L840] mode3 = 0 [L841] p12_old = p12_new [L842] p12_new = nomsg [L843] p13_old = p13_new [L844] p13_new = nomsg [L845] p21_old = p21_new [L846] p21_new = nomsg [L847] p23_old = p23_new [L848] p23_new = nomsg [L849] p31_old = p31_new [L850] p31_new = nomsg [L851] p32_old = p32_new [L852] p32_new = nomsg [L854] int check__tmp; [L855] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L861] check__tmp = 0 [L862] __return_3069 = check__tmp [L863] main__c1 = __return_3069 [L865] _Bool __tmp_4; [L866] __tmp_4 = main__c1 [L867] _Bool assert__arg; [L868] assert__arg = __tmp_4 [L869] COND TRUE assert__arg == 0 [L871] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 416 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11743 SDtfs, 10970 SDslu, 6798 SDs, 0 SdLazy, 12476 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34424occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 20386 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 2085 NumberOfCodeBlocks, 2085 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1920 ConstructedInterpolants, 0 QuantifiedInterpolants, 1088136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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!