/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:38:46,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:38:46,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:38:46,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:38:46,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:38:46,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:38:46,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:38:46,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:38:46,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:38:46,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:38:46,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:38:46,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:38:46,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:38:47,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:38:47,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:38:47,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:38:47,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:38:47,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:38:47,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:38:47,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:38:47,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:38:47,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:38:47,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:38:47,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:38:47,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:38:47,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:38:47,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:38:47,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:38:47,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:38:47,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:38:47,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:38:47,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:38:47,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:38:47,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:38:47,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:38:47,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:38:47,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:38:47,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:38:47,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:38:47,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:38:47,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:38:47,046 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 [2020-09-24 20:38:47,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:38:47,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:38:47,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:38:47,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:38:47,098 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:38:47,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:38:47,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:38:47,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:38:47,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:38:47,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:38:47,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:38:47,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:38:47,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:38:47,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:38:47,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:38:47,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:38:47,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:38:47,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:38:47,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:38:47,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:38:47,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:38:47,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:38:47,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:38:47,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:38:47,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:38:47,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:38:47,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:38:47,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:38:47,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:38:47,105 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:38:47,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:38:47,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:38:47,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:38:47,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:38:47,593 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:38:47,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-09-24 20:38:47,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df14befa3/8844f6947d3f4b21bfc93da997d2e3a1/FLAG21079e770 [2020-09-24 20:38:48,244 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:38:48,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-09-24 20:38:48,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df14befa3/8844f6947d3f4b21bfc93da997d2e3a1/FLAG21079e770 [2020-09-24 20:38:48,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df14befa3/8844f6947d3f4b21bfc93da997d2e3a1 [2020-09-24 20:38:48,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:38:48,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:38:48,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:38:48,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:38:48,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:38:48,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:48,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d574d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48, skipping insertion in model container [2020-09-24 20:38:48,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:48,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:38:48,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:38:48,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:38:48,905 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:38:48,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:38:48,965 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:38:48,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48 WrapperNode [2020-09-24 20:38:48,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:38:48,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:38:48,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:38:48,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:38:49,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... [2020-09-24 20:38:49,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:38:49,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:38:49,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:38:49,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:38:49,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:38:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:38:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:38:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:38:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:38:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:38:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:38:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:38:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:38:49,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:38:49,804 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-24 20:38:49,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:38:49 BoogieIcfgContainer [2020-09-24 20:38:49,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:38:49,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:38:49,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:38:49,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:38:49,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:38:48" (1/3) ... [2020-09-24 20:38:49,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3c926a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:38:49, skipping insertion in model container [2020-09-24 20:38:49,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:48" (2/3) ... [2020-09-24 20:38:49,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3c926a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:38:49, skipping insertion in model container [2020-09-24 20:38:49,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:38:49" (3/3) ... [2020-09-24 20:38:49,824 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-09-24 20:38:49,838 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:38:49,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:38:49,871 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:38:49,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:38:49,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:38:49,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:38:49,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:38:49,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:38:49,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:38:49,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:38:49,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:38:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-09-24 20:38:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 20:38:49,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:49,946 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] [2020-09-24 20:38:49,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1507146259, now seen corresponding path program 1 times [2020-09-24 20:38:49,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:49,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303328502] [2020-09-24 20:38:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:50,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:38:50,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 20:38:50,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:38:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:38:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:38:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:38:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:38:50,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303328502] [2020-09-24 20:38:50,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:50,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:38:50,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371249047] [2020-09-24 20:38:50,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:38:50,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:38:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:38:50,377 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 3 states. [2020-09-24 20:38:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:50,474 INFO L93 Difference]: Finished difference Result 369 states and 507 transitions. [2020-09-24 20:38:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:38:50,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-24 20:38:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:50,494 INFO L225 Difference]: With dead ends: 369 [2020-09-24 20:38:50,494 INFO L226 Difference]: Without dead ends: 178 [2020-09-24 20:38:50,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:38:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-24 20:38:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-24 20:38:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-24 20:38:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2020-09-24 20:38:50,571 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 22 [2020-09-24 20:38:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:50,572 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2020-09-24 20:38:50,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:38:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2020-09-24 20:38:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 20:38:50,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:50,574 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] [2020-09-24 20:38:50,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:38:50,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash -946920198, now seen corresponding path program 1 times [2020-09-24 20:38:50,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:50,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465494931] [2020-09-24 20:38:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:50,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 20:38:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:38:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 20:38:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:38:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:38:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:38:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:38:50,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:38:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:38:50,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465494931] [2020-09-24 20:38:50,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:50,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:50,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637901256] [2020-09-24 20:38:50,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:50,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:50,833 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand 4 states. [2020-09-24 20:38:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:51,341 INFO L93 Difference]: Finished difference Result 496 states and 601 transitions. [2020-09-24 20:38:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:51,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-24 20:38:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:51,345 INFO L225 Difference]: With dead ends: 496 [2020-09-24 20:38:51,345 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 20:38:51,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 20:38:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 270. [2020-09-24 20:38:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-24 20:38:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2020-09-24 20:38:51,374 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 23 [2020-09-24 20:38:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:51,375 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2020-09-24 20:38:51,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2020-09-24 20:38:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 20:38:51,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:51,377 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] [2020-09-24 20:38:51,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:38:51,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:51,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1459950525, now seen corresponding path program 1 times [2020-09-24 20:38:51,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:51,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836860973] [2020-09-24 20:38:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:51,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:51,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:38:51,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:38:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:38:51,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:38:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:38:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:38:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:51,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:38:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:38:51,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836860973] [2020-09-24 20:38:51,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:51,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:51,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443214235] [2020-09-24 20:38:51,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:51,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:51,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:51,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:51,536 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand 4 states. [2020-09-24 20:38:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:51,956 INFO L93 Difference]: Finished difference Result 541 states and 657 transitions. [2020-09-24 20:38:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:51,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-24 20:38:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:51,959 INFO L225 Difference]: With dead ends: 541 [2020-09-24 20:38:51,959 INFO L226 Difference]: Without dead ends: 284 [2020-09-24 20:38:51,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-24 20:38:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2020-09-24 20:38:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-24 20:38:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-09-24 20:38:51,980 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 31 [2020-09-24 20:38:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:51,981 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-09-24 20:38:51,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-09-24 20:38:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 20:38:51,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:51,983 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:51,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:38:51,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:51,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:51,984 INFO L82 PathProgramCache]: Analyzing trace with hash -47890514, now seen corresponding path program 1 times [2020-09-24 20:38:51,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:51,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584512255] [2020-09-24 20:38:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:52,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:38:52,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:38:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 20:38:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 20:38:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:38:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:52,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:38:52,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:38:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:38:52,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584512255] [2020-09-24 20:38:52,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:52,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:52,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505806760] [2020-09-24 20:38:52,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:52,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:52,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:52,209 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 4 states. [2020-09-24 20:38:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:52,537 INFO L93 Difference]: Finished difference Result 471 states and 567 transitions. [2020-09-24 20:38:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:52,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 20:38:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:52,539 INFO L225 Difference]: With dead ends: 471 [2020-09-24 20:38:52,540 INFO L226 Difference]: Without dead ends: 210 [2020-09-24 20:38:52,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-24 20:38:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2020-09-24 20:38:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-24 20:38:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 246 transitions. [2020-09-24 20:38:52,560 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 246 transitions. Word has length 40 [2020-09-24 20:38:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:52,563 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 246 transitions. [2020-09-24 20:38:52,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 246 transitions. [2020-09-24 20:38:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:38:52,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:52,565 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:52,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:38:52,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:52,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1667007108, now seen corresponding path program 1 times [2020-09-24 20:38:52,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:52,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011740144] [2020-09-24 20:38:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:52,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:52,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 20:38:52,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:52,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:38:52,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 20:38:52,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:38:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:52,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:38:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:38:52,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011740144] [2020-09-24 20:38:52,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:52,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:52,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351892157] [2020-09-24 20:38:52,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:52,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:52,683 INFO L87 Difference]: Start difference. First operand 208 states and 246 transitions. Second operand 4 states. [2020-09-24 20:38:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:52,820 INFO L93 Difference]: Finished difference Result 357 states and 425 transitions. [2020-09-24 20:38:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:52,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 20:38:52,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:52,822 INFO L225 Difference]: With dead ends: 357 [2020-09-24 20:38:52,822 INFO L226 Difference]: Without dead ends: 162 [2020-09-24 20:38:52,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-24 20:38:52,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-24 20:38:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 20:38:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2020-09-24 20:38:52,832 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 43 [2020-09-24 20:38:52,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:52,833 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2020-09-24 20:38:52,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2020-09-24 20:38:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:38:52,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:52,835 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:52,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:38:52,836 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1459500481, now seen corresponding path program 1 times [2020-09-24 20:38:52,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:52,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66186899] [2020-09-24 20:38:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:38:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 20:38:52,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 20:38:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:38:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:52,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:52,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:52,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:52,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:38:52,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:38:52,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66186899] [2020-09-24 20:38:52,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:52,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:52,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506053779] [2020-09-24 20:38:52,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:52,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:52,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:52,966 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand 4 states. [2020-09-24 20:38:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:53,315 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-09-24 20:38:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:53,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-24 20:38:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:53,318 INFO L225 Difference]: With dead ends: 360 [2020-09-24 20:38:53,319 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 20:38:53,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 20:38:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 227. [2020-09-24 20:38:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 20:38:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2020-09-24 20:38:53,330 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 51 [2020-09-24 20:38:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:53,330 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2020-09-24 20:38:53,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2020-09-24 20:38:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:38:53,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:53,333 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:53,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:38:53,333 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:53,334 INFO L82 PathProgramCache]: Analyzing trace with hash -389028907, now seen corresponding path program 1 times [2020-09-24 20:38:53,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:53,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989918020] [2020-09-24 20:38:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:53,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:53,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:53,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:38:53,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:38:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 20:38:53,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 20:38:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:38:53,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:53,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:38:53,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989918020] [2020-09-24 20:38:53,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:53,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:53,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989808136] [2020-09-24 20:38:53,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:53,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:53,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:53,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:53,487 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand 4 states. [2020-09-24 20:38:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:53,642 INFO L93 Difference]: Finished difference Result 377 states and 448 transitions. [2020-09-24 20:38:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:53,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-24 20:38:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:53,644 INFO L225 Difference]: With dead ends: 377 [2020-09-24 20:38:53,644 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 20:38:53,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 20:38:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-09-24 20:38:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 20:38:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2020-09-24 20:38:53,654 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 52 [2020-09-24 20:38:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:53,654 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2020-09-24 20:38:53,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2020-09-24 20:38:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:38:53,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:53,656 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:53,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:38:53,656 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash 910217494, now seen corresponding path program 1 times [2020-09-24 20:38:53,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:53,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212729837] [2020-09-24 20:38:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:38:53,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:38:53,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 20:38:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:38:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:53,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:53,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:53,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:38:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:38:53,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212729837] [2020-09-24 20:38:53,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:53,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:53,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041444879] [2020-09-24 20:38:53,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:53,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:53,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:53,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:53,776 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand 4 states. [2020-09-24 20:38:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:53,961 INFO L93 Difference]: Finished difference Result 310 states and 362 transitions. [2020-09-24 20:38:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:53,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 20:38:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:53,964 INFO L225 Difference]: With dead ends: 310 [2020-09-24 20:38:53,964 INFO L226 Difference]: Without dead ends: 162 [2020-09-24 20:38:53,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-24 20:38:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-24 20:38:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 20:38:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 183 transitions. [2020-09-24 20:38:53,972 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 183 transitions. Word has length 54 [2020-09-24 20:38:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:53,972 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 183 transitions. [2020-09-24 20:38:53,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 183 transitions. [2020-09-24 20:38:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 20:38:53,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:53,974 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:53,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:38:53,974 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:53,975 INFO L82 PathProgramCache]: Analyzing trace with hash 57784286, now seen corresponding path program 1 times [2020-09-24 20:38:53,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:53,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156208810] [2020-09-24 20:38:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:54,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 20:38:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:38:54,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:38:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:38:54,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:54,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:54,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:54,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:38:54,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:38:54,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156208810] [2020-09-24 20:38:54,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:54,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:54,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555057776] [2020-09-24 20:38:54,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:54,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:54,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:54,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:54,083 INFO L87 Difference]: Start difference. First operand 162 states and 183 transitions. Second operand 4 states. [2020-09-24 20:38:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:54,283 INFO L93 Difference]: Finished difference Result 164 states and 184 transitions. [2020-09-24 20:38:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:54,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-24 20:38:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:54,285 INFO L225 Difference]: With dead ends: 164 [2020-09-24 20:38:54,285 INFO L226 Difference]: Without dead ends: 159 [2020-09-24 20:38:54,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-24 20:38:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-09-24 20:38:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 20:38:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2020-09-24 20:38:54,293 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 55 [2020-09-24 20:38:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:54,293 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2020-09-24 20:38:54,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2020-09-24 20:38:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:38:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:54,295 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:54,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:38:54,295 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1987485698, now seen corresponding path program 1 times [2020-09-24 20:38:54,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:54,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271904184] [2020-09-24 20:38:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:54,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:54,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:38:54,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:38:54,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:38:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:38:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:38:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:38:54,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271904184] [2020-09-24 20:38:54,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:54,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:54,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896281060] [2020-09-24 20:38:54,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:54,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:54,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:54,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:54,419 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand 4 states. [2020-09-24 20:38:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:54,609 INFO L93 Difference]: Finished difference Result 251 states and 286 transitions. [2020-09-24 20:38:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:54,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-24 20:38:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:54,611 INFO L225 Difference]: With dead ends: 251 [2020-09-24 20:38:54,611 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:38:54,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:54,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:38:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:38:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:38:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:38:54,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-24 20:38:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:54,613 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:38:54,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:38:54,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:38:54,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:38:54,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:38:54,935 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:38:54,935 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:38:54,936 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-09-24 20:38:54,936 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:38:54,936 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:38:54,936 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:38:54,936 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:38:54,936 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:38:54,936 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:38:54,937 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:38:54,937 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:38:54,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:38:54,937 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-09-24 20:38:54,938 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-09-24 20:38:54,938 INFO L268 CegarLoopResult]: For program point L300(line 300) no Hoare annotation was computed. [2020-09-24 20:38:54,938 INFO L268 CegarLoopResult]: For program point L300-1(lines 300 315) no Hoare annotation was computed. [2020-09-24 20:38:54,938 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-09-24 20:38:54,938 INFO L268 CegarLoopResult]: For program point L300-2(line 300) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L300-3(line 300) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L268(line 268) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L368(line 368) no Hoare annotation was computed. [2020-09-24 20:38:54,939 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-09-24 20:38:54,940 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-09-24 20:38:54,941 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-09-24 20:38:54,941 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 20:38:54,941 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-09-24 20:38:54,941 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-09-24 20:38:54,941 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-09-24 20:38:54,941 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 20:38:54,941 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L274(line 274) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L374(line 374) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L242(line 242) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L342(line 342) no Hoare annotation was computed. [2020-09-24 20:38:54,942 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point L310(line 310) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point L344(line 344) no Hoare annotation was computed. [2020-09-24 20:38:54,943 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L80-1(lines 80 95) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L80-2(line 80) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L80-3(line 80) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L312(line 312) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L48-1(lines 48 63) no Hoare annotation was computed. [2020-09-24 20:38:54,944 INFO L268 CegarLoopResult]: For program point L48-2(line 48) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L48-3(line 48) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L148-1(lines 148 163) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L148-2(line 148) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L148-3(line 148) no Hoare annotation was computed. [2020-09-24 20:38:54,945 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L248(line 248) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L248-1(lines 248 263) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L248-2(line 248) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L248-3(line 248) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L116-1(lines 116 131) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L116-2(line 116) no Hoare annotation was computed. [2020-09-24 20:38:54,946 INFO L268 CegarLoopResult]: For program point L116-3(line 116) no Hoare annotation was computed. [2020-09-24 20:38:54,947 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= main_~this_state~0 0) (= main_~q~0 2)) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-24 20:38:54,947 INFO L268 CegarLoopResult]: For program point L348(line 348) no Hoare annotation was computed. [2020-09-24 20:38:54,947 INFO L268 CegarLoopResult]: For program point L348-1(lines 348 363) no Hoare annotation was computed. [2020-09-24 20:38:54,947 INFO L268 CegarLoopResult]: For program point L348-2(line 348) no Hoare annotation was computed. [2020-09-24 20:38:54,947 INFO L268 CegarLoopResult]: For program point L348-3(line 348) no Hoare annotation was computed. [2020-09-24 20:38:54,947 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-09-24 20:38:54,947 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L216-1(lines 216 231) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L216-2(line 216) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L216-3(line 216) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L316(line 316) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-09-24 20:38:54,948 INFO L268 CegarLoopResult]: For program point L316-1(lines 316 331) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L316-2(line 316) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L316-3(line 316) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L184-1(lines 184 199) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L184-2(line 184) no Hoare annotation was computed. [2020-09-24 20:38:54,949 INFO L268 CegarLoopResult]: For program point L184-3(line 184) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L284(line 284) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L284-1(lines 284 299) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L284-2(line 284) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L284-3(line 284) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-09-24 20:38:54,950 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L268 CegarLoopResult]: For program point L252(line 252) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L268 CegarLoopResult]: For program point L352(line 352) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-09-24 20:38:54,951 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-24 20:38:54,952 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L258(line 258) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-09-24 20:38:54,953 INFO L268 CegarLoopResult]: For program point L358(line 358) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L226(line 226) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L28-1(lines 28 43) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L326(line 326) no Hoare annotation was computed. [2020-09-24 20:38:54,954 INFO L268 CegarLoopResult]: For program point L260(line 260) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L360(line 360) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L228(line 228) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-09-24 20:38:54,955 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-09-24 20:38:54,955 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L64-1(lines 64 79) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L64-2(line 64) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L64-3(line 64) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L164-1(lines 164 179) no Hoare annotation was computed. [2020-09-24 20:38:54,956 INFO L268 CegarLoopResult]: For program point L164-2(line 164) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L164-3(line 164) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L264(line 264) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L264-1(lines 264 279) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L264-2(line 264) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L264-3(line 264) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-09-24 20:38:54,957 INFO L268 CegarLoopResult]: For program point L132-1(lines 132 147) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L132-2(line 132) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L132-3(line 132) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L364-1(lines 364 379) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L364-2(line 364) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L364-3(line 364) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-09-24 20:38:54,958 INFO L268 CegarLoopResult]: For program point L232-1(lines 232 247) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L100-1(lines 100 115) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L100-2(line 100) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L100-3(line 100) no Hoare annotation was computed. [2020-09-24 20:38:54,959 INFO L268 CegarLoopResult]: For program point L332(line 332) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L332-1(lines 332 347) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L332-2(line 332) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L332-3(line 332) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L200-1(lines 200 215) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-09-24 20:38:54,960 INFO L268 CegarLoopResult]: For program point L200-2(line 200) no Hoare annotation was computed. [2020-09-24 20:38:54,961 INFO L268 CegarLoopResult]: For program point L200-3(line 200) no Hoare annotation was computed. [2020-09-24 20:38:54,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:38:54 BoogieIcfgContainer [2020-09-24 20:38:54,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:38:54,989 INFO L168 Benchmark]: Toolchain (without parser) took 6402.62 ms. Allocated memory was 145.8 MB in the beginning and 284.2 MB in the end (delta: 138.4 MB). Free memory was 101.8 MB in the beginning and 230.2 MB in the end (delta: -128.5 MB). Peak memory consumption was 147.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:54,990 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:38:54,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.23 ms. Allocated memory is still 145.8 MB. Free memory was 101.1 MB in the beginning and 88.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:54,992 INFO L168 Benchmark]: Boogie Preprocessor took 151.99 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 88.7 MB in the beginning and 179.5 MB in the end (delta: -90.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:54,993 INFO L168 Benchmark]: RCFGBuilder took 693.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 143.2 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:54,994 INFO L168 Benchmark]: TraceAbstraction took 5171.99 ms. Allocated memory was 202.4 MB in the beginning and 284.2 MB in the end (delta: 81.8 MB). Free memory was 142.5 MB in the beginning and 230.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:54,998 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.23 ms. Allocated memory is still 145.8 MB. Free memory was 101.1 MB in the beginning and 88.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.99 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 88.7 MB in the beginning and 179.5 MB in the end (delta: -90.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 693.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 143.2 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5171.99 ms. Allocated memory was 202.4 MB in the beginning and 284.2 MB in the end (delta: 81.8 MB). Free memory was 142.5 MB in the beginning and 230.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((q <= 0 || (this_state <= 0 && q == 2)) || ((3 <= q && 2 == this_state) && q <= 3)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1858 SDtfs, 2695 SDslu, 111 SDs, 0 SdLazy, 1245 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 76 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 72 HoareAnnotationTreeSize, 7 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 167 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 35395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 49/49 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...