/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 false -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 0.1.25-89f541c [2020-08-27 22:01:46,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:01:46,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:01:46,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:01:46,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:01:46,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:01:46,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:01:46,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:01:46,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:01:46,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:01:46,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:01:46,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:01:46,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:01:46,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:01:46,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:01:46,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:01:46,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:01:46,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:01:46,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:01:47,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:01:47,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:01:47,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:01:47,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:01:47,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:01:47,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 22:01:47,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:01:47,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:01:47,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:01:47,035 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 [2020-08-27 22:01:47,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:01:47,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:01:47,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:01:47,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:01:47,092 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:01:47,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:01:47,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 22:01:47,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:01:47,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 22:01:47,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:01:47,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:01:47,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:01:47,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:01:47,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 22:01:47,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:01:47,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:01:47,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:01:47,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:01:47,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:01:47,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:01:47,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:01:47,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:01:47,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:01:47,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:01:47,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:01:47,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:01:47,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:01:47,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:01:47,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:01:47,099 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 -> false [2020-08-27 22:01:47,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:01:47,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:01:47,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:01:47,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:01:47,575 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:01:47,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-27 22:01:47,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94f8e27fb/345dabaa39784e4db339fac674ee721c/FLAG0f2c17fbc [2020-08-27 22:01:48,341 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:01:48,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-27 22:01:48,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94f8e27fb/345dabaa39784e4db339fac674ee721c/FLAG0f2c17fbc [2020-08-27 22:01:48,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94f8e27fb/345dabaa39784e4db339fac674ee721c [2020-08-27 22:01:48,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:01:48,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:01:48,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:01:48,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:01:48,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:01:48,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:01:48" (1/1) ... [2020-08-27 22:01:48,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9ce53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:48, skipping insertion in model container [2020-08-27 22:01:48,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:01:48" (1/1) ... [2020-08-27 22:01:48,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:01:48,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:01:49,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:01:49,460 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:01:49,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:01:49,977 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:01:49,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49 WrapperNode [2020-08-27 22:01:49,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:01:49,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:01:49,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:01:49,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:01:49,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:49,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:50,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:50,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:50,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:50,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:50,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (1/1) ... [2020-08-27 22:01:50,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:01:50,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:01:50,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:01:50,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:01:50,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (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 [2020-08-27 22:01:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:01:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:01:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 22:01:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:01:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:01:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-27 22:01:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-27 22:01:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-27 22:01:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 22:01:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 22:01:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-27 22:01:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-27 22:01:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-27 22:01:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-27 22:01:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-27 22:01:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-27 22:01:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-27 22:01:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:01:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:01:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:01:51,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:01:51,848 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 22:01:51,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:01:51 BoogieIcfgContainer [2020-08-27 22:01:51,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:01:51,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:01:51,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:01:51,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:01:51,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:01:48" (1/3) ... [2020-08-27 22:01:51,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449dd4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:01:51, skipping insertion in model container [2020-08-27 22:01:51,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:49" (2/3) ... [2020-08-27 22:01:51,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449dd4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:01:51, skipping insertion in model container [2020-08-27 22:01:51,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:01:51" (3/3) ... [2020-08-27 22:01:51,882 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-27 22:01:51,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:01:51,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-27 22:01:51,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-27 22:01:51,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:01:51,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:01:51,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:01:51,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:01:51,971 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:01:51,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:01:51,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:01:51,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:01:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-27 22:01:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-27 22:01:52,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:52,029 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] [2020-08-27 22:01:52,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:52,039 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-27 22:01:52,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:52,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888810158] [2020-08-27 22:01:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:53,202 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:01:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:01:53,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888810158] [2020-08-27 22:01:53,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:53,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:01:53,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711578686] [2020-08-27 22:01:53,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:01:53,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:01:53,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:01:53,363 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-27 22:01:53,768 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-27 22:01:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:56,807 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-27 22:01:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:01:56,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-27 22:01:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:56,833 INFO L225 Difference]: With dead ends: 754 [2020-08-27 22:01:56,834 INFO L226 Difference]: Without dead ends: 593 [2020-08-27 22:01:56,839 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 [2020-08-27 22:01:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-27 22:01:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-27 22:01:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-27 22:01:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-27 22:01:56,982 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-27 22:01:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:56,984 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-27 22:01:56,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:01:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-27 22:01:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-27 22:01:56,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:56,989 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] [2020-08-27 22:01:56,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:01:56,990 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-27 22:01:56,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:56,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873984787] [2020-08-27 22:01:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:57,545 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:01:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:01:57,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873984787] [2020-08-27 22:01:57,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:57,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:01:57,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010292471] [2020-08-27 22:01:57,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:01:57,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:01:57,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:01:57,602 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-27 22:01:57,948 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-27 22:02:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:00,400 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-27 22:02:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:00,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-27 22:02:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:00,415 INFO L225 Difference]: With dead ends: 1190 [2020-08-27 22:02:00,415 INFO L226 Difference]: Without dead ends: 961 [2020-08-27 22:02:00,422 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 [2020-08-27 22:02:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-27 22:02:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-27 22:02:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-27 22:02:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-27 22:02:00,480 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-27 22:02:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:00,481 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-27 22:02:00,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-27 22:02:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-27 22:02:00,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:00,485 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] [2020-08-27 22:02:00,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 22:02:00,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-27 22:02:00,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:00,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073063771] [2020-08-27 22:02:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:01,001 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:01,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073063771] [2020-08-27 22:02:01,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:01,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:01,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734545210] [2020-08-27 22:02:01,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:01,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:01,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:01,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:01,136 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-27 22:02:01,425 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-27 22:02:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:03,899 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-27 22:02:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:03,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-27 22:02:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:03,917 INFO L225 Difference]: With dead ends: 2090 [2020-08-27 22:02:03,918 INFO L226 Difference]: Without dead ends: 1701 [2020-08-27 22:02:03,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-27 22:02:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-27 22:02:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-27 22:02:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-27 22:02:04,013 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-27 22:02:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:04,014 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-27 22:02:04,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-27 22:02:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-27 22:02:04,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:04,021 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] [2020-08-27 22:02:04,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 22:02:04,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-27 22:02:04,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:04,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436674743] [2020-08-27 22:02:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:04,690 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:04,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:04,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436674743] [2020-08-27 22:02:04,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:04,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:02:04,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033097633] [2020-08-27 22:02:04,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:02:04,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:04,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:02:04,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:04,754 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-27 22:02:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:08,781 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-27 22:02:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:08,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-27 22:02:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:08,800 INFO L225 Difference]: With dead ends: 4967 [2020-08-27 22:02:08,800 INFO L226 Difference]: Without dead ends: 3281 [2020-08-27 22:02:08,804 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 [2020-08-27 22:02:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-27 22:02:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-27 22:02:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-27 22:02:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-27 22:02:08,951 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-27 22:02:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:08,951 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-27 22:02:08,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 22:02:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-27 22:02:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-27 22:02:08,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:08,957 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] [2020-08-27 22:02:08,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 22:02:08,960 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-27 22:02:08,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:08,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557681856] [2020-08-27 22:02:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:09,354 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:09,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557681856] [2020-08-27 22:02:09,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:09,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:09,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812929975] [2020-08-27 22:02:09,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:09,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:09,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:09,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:09,417 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-27 22:02:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:12,203 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-27 22:02:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 22:02:12,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-27 22:02:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:12,235 INFO L225 Difference]: With dead ends: 9659 [2020-08-27 22:02:12,235 INFO L226 Difference]: Without dead ends: 6456 [2020-08-27 22:02:12,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-27 22:02:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-27 22:02:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-27 22:02:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-27 22:02:12,444 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-27 22:02:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:12,444 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-27 22:02:12,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-27 22:02:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-27 22:02:12,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:12,450 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] [2020-08-27 22:02:12,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 22:02:12,450 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:12,451 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-27 22:02:12,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:12,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734575047] [2020-08-27 22:02:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:13,059 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:13,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734575047] [2020-08-27 22:02:13,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:13,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:02:13,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329696007] [2020-08-27 22:02:13,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:02:13,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:13,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:02:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:13,125 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-27 22:02:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:16,598 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-27 22:02:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:16,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-27 22:02:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:16,627 INFO L225 Difference]: With dead ends: 9441 [2020-08-27 22:02:16,627 INFO L226 Difference]: Without dead ends: 6238 [2020-08-27 22:02:16,634 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 [2020-08-27 22:02:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-27 22:02:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-27 22:02:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-27 22:02:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-27 22:02:16,921 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-27 22:02:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:16,922 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-27 22:02:16,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 22:02:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-27 22:02:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-27 22:02:16,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:16,935 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] [2020-08-27 22:02:16,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 22:02:16,935 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:16,936 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-27 22:02:16,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:16,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275856793] [2020-08-27 22:02:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:17,395 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:17,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275856793] [2020-08-27 22:02:17,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:17,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:17,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541981753] [2020-08-27 22:02:17,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:17,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:17,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:17,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:17,440 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-27 22:02:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:21,585 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-27 22:02:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 22:02:21,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-27 22:02:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:21,632 INFO L225 Difference]: With dead ends: 18492 [2020-08-27 22:02:21,633 INFO L226 Difference]: Without dead ends: 12348 [2020-08-27 22:02:21,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-27 22:02:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-27 22:02:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-27 22:02:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-27 22:02:21,968 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-27 22:02:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:21,969 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-27 22:02:21,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-27 22:02:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-27 22:02:21,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:21,978 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] [2020-08-27 22:02:21,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 22:02:21,978 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:21,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-27 22:02:21,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:21,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946599123] [2020-08-27 22:02:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:22,382 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:22,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946599123] [2020-08-27 22:02:22,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:22,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:22,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940001843] [2020-08-27 22:02:22,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:22,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:22,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:22,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:22,437 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-27 22:02:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:26,477 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-27 22:02:26,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 22:02:26,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-27 22:02:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:26,501 INFO L225 Difference]: With dead ends: 16495 [2020-08-27 22:02:26,501 INFO L226 Difference]: Without dead ends: 10615 [2020-08-27 22:02:26,515 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 [2020-08-27 22:02:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-27 22:02:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-27 22:02:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-27 22:02:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-27 22:02:27,089 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-27 22:02:27,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:27,090 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-27 22:02:27,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:27,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-27 22:02:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-27 22:02:27,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:27,108 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] [2020-08-27 22:02:27,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 22:02:27,108 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-27 22:02:27,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:27,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322843446] [2020-08-27 22:02:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:27,584 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:27,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322843446] [2020-08-27 22:02:27,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:27,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:02:27,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200944696] [2020-08-27 22:02:27,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:02:27,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:27,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:02:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:27,634 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-27 22:02:30,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:30,453 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-27 22:02:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:30,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-27 22:02:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:30,477 INFO L225 Difference]: With dead ends: 21564 [2020-08-27 22:02:30,478 INFO L226 Difference]: Without dead ends: 10851 [2020-08-27 22:02:30,494 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 [2020-08-27 22:02:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-27 22:02:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-27 22:02:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-27 22:02:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-27 22:02:30,932 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-27 22:02:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:30,933 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-27 22:02:30,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 22:02:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-27 22:02:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-27 22:02:30,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:30,944 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] [2020-08-27 22:02:30,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 22:02:30,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:30,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-27 22:02:30,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:30,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227196183] [2020-08-27 22:02:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:31,425 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:31,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227196183] [2020-08-27 22:02:31,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:31,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:02:31,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579309987] [2020-08-27 22:02:31,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:02:31,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:31,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:02:31,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:31,490 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-27 22:02:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:35,369 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-27 22:02:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:35,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-27 22:02:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:35,391 INFO L225 Difference]: With dead ends: 15230 [2020-08-27 22:02:35,391 INFO L226 Difference]: Without dead ends: 10851 [2020-08-27 22:02:35,401 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 [2020-08-27 22:02:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-27 22:02:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-27 22:02:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-27 22:02:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-27 22:02:36,479 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-27 22:02:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:36,479 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-27 22:02:36,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 22:02:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-27 22:02:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-27 22:02:36,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:36,490 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] [2020-08-27 22:02:36,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 22:02:36,490 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-27 22:02:36,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:36,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253346411] [2020-08-27 22:02:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:36,877 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:36,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253346411] [2020-08-27 22:02:36,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:36,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:36,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893991944] [2020-08-27 22:02:36,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:36,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:36,919 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-27 22:02:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:41,155 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-27 22:02:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 22:02:41,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-27 22:02:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:41,188 INFO L225 Difference]: With dead ends: 25409 [2020-08-27 22:02:41,188 INFO L226 Difference]: Without dead ends: 21030 [2020-08-27 22:02:41,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-27 22:02:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-27 22:02:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-27 22:02:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-27 22:02:41,728 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-27 22:02:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:41,728 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-27 22:02:41,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-27 22:02:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-27 22:02:41,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:41,736 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] [2020-08-27 22:02:41,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 22:02:41,737 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-27 22:02:41,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:41,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077331272] [2020-08-27 22:02:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:42,287 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 22:02:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:42,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077331272] [2020-08-27 22:02:42,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:42,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:02:42,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383237975] [2020-08-27 22:02:42,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:02:42,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:02:42,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:42,346 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states.