/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:54,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:54,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:54,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:54,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:54,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:54,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:54,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:54,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:54,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:54,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:54,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:54,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:54,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:54,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:54,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:54,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:54,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:54,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:54,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:54,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:54,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:54,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:54,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:54,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:54,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:54,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:54,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:54,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:54,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:54,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:54,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:54,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:54,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:54,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:54,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:54,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:54,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:54,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:54,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:54,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:54,141 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 [2020-09-25 10:09:54,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:54,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:54,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:54,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:54,170 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:54,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:54,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:54,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:54,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:54,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:54,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:54,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:54,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:54,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:54,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:54,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:54,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:54,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:54,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:54,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:54,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:54,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:54,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:54,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:54,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:54,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:54,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:54,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:54,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:54,175 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:09:54,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:54,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:54,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:54,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:54,685 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:54,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 10:09:54,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca595db95/c6d57177d8174a82ba1e6f4e0c7c2f90/FLAGacfe8bd73 [2020-09-25 10:09:55,461 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:55,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 10:09:55,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca595db95/c6d57177d8174a82ba1e6f4e0c7c2f90/FLAGacfe8bd73 [2020-09-25 10:09:55,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca595db95/c6d57177d8174a82ba1e6f4e0c7c2f90 [2020-09-25 10:09:55,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:55,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:55,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:55,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:55,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:55,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39315203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55, skipping insertion in model container [2020-09-25 10:09:55,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:55,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:56,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:56,356 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:56,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:56,525 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:56,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56 WrapperNode [2020-09-25 10:09:56,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:56,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:56,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:56,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:56,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:56,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:56,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:56,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:56,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (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 [2020-09-25 10:09:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:58,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:58,140 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:58,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:58 BoogieIcfgContainer [2020-09-25 10:09:58,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:58,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:58,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:58,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:58,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:55" (1/3) ... [2020-09-25 10:09:58,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43daf168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:58, skipping insertion in model container [2020-09-25 10:09:58,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (2/3) ... [2020-09-25 10:09:58,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43daf168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:58, skipping insertion in model container [2020-09-25 10:09:58,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:58" (3/3) ... [2020-09-25 10:09:58,162 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 10:09:58,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:58,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:58,214 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:58,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:58,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:58,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:58,250 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:58,250 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:58,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:58,251 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:58,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 10:09:58,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:58,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:58,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 10:09:58,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:58,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547774065] [2020-09-25 10:09:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 10:10:03,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:10:03,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:03,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:10:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 10:10:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:10:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:03,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:03,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547774065] [2020-09-25 10:10:03,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:03,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:03,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470671541] [2020-09-25 10:10:03,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:03,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:03,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:03,927 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:06,207 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 10:10:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:06,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 10:10:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:06,246 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 10:10:06,246 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 10:10:06,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 10:10:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 10:10:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 10:10:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 10:10:06,365 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-25 10:10:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:06,366 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 10:10:06,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 10:10:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 10:10:06,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:06,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:06,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:06,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 10:10:06,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:06,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970760653] [2020-09-25 10:10:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:06,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:10:11,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:10:11,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:10:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 10:10:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:10:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:11,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 10:10:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:12,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970760653] [2020-09-25 10:10:12,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:12,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:10:12,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179005823] [2020-09-25 10:10:12,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:10:12,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:12,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:10:12,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:12,385 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 12 states. [2020-09-25 10:10:13,130 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-09-25 10:10:13,521 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-09-25 10:10:13,929 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-09-25 10:10:14,139 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-09-25 10:10:16,034 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-09-25 10:10:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:19,093 INFO L93 Difference]: Finished difference Result 2928 states and 4150 transitions. [2020-09-25 10:10:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:10:19,094 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-09-25 10:10:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:19,109 INFO L225 Difference]: With dead ends: 2928 [2020-09-25 10:10:19,110 INFO L226 Difference]: Without dead ends: 1935 [2020-09-25 10:10:19,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:10:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-09-25 10:10:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1748. [2020-09-25 10:10:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-25 10:10:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2196 transitions. [2020-09-25 10:10:19,207 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2196 transitions. Word has length 134 [2020-09-25 10:10:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:19,207 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 2196 transitions. [2020-09-25 10:10:19,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:10:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2196 transitions. [2020-09-25 10:10:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 10:10:19,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:19,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:19,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:19,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:19,218 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-25 10:10:19,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:19,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362118491] [2020-09-25 10:10:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 10:10:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 10:10:24,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:24,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:10:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:24,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:24,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:10:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:24,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:24,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:24,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:10:24,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:10:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:24,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:24,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362118491] [2020-09-25 10:10:24,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:24,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:24,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244407994] [2020-09-25 10:10:24,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:24,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:24,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:24,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:24,526 INFO L87 Difference]: Start difference. First operand 1748 states and 2196 transitions. Second operand 6 states. [2020-09-25 10:10:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:26,882 INFO L93 Difference]: Finished difference Result 4846 states and 6405 transitions. [2020-09-25 10:10:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:26,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 10:10:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:26,910 INFO L225 Difference]: With dead ends: 4846 [2020-09-25 10:10:26,910 INFO L226 Difference]: Without dead ends: 3436 [2020-09-25 10:10:26,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2020-09-25 10:10:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3307. [2020-09-25 10:10:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3307 states. [2020-09-25 10:10:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 4190 transitions. [2020-09-25 10:10:27,094 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 4190 transitions. Word has length 138 [2020-09-25 10:10:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:27,098 INFO L479 AbstractCegarLoop]: Abstraction has 3307 states and 4190 transitions. [2020-09-25 10:10:27,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 4190 transitions. [2020-09-25 10:10:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:10:27,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:27,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:27,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:27,122 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1412307653, now seen corresponding path program 1 times [2020-09-25 10:10:27,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:27,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952000633] [2020-09-25 10:10:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:10:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:10:32,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:32,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:10:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 10:10:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:32,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:32,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:10:32,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:32,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:32,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 10:10:32,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 10:10:32,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:32,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:32,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:32,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:32,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:10:32,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:33,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952000633] [2020-09-25 10:10:33,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:33,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:10:33,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686359871] [2020-09-25 10:10:33,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:10:33,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:10:33,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:33,127 INFO L87 Difference]: Start difference. First operand 3307 states and 4190 transitions. Second operand 12 states. [2020-09-25 10:10:33,994 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 10:10:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:36,997 INFO L93 Difference]: Finished difference Result 6390 states and 8272 transitions. [2020-09-25 10:10:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:10:36,998 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 162 [2020-09-25 10:10:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:37,019 INFO L225 Difference]: With dead ends: 6390 [2020-09-25 10:10:37,019 INFO L226 Difference]: Without dead ends: 3630 [2020-09-25 10:10:37,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:10:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2020-09-25 10:10:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3302. [2020-09-25 10:10:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2020-09-25 10:10:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4157 transitions. [2020-09-25 10:10:37,139 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4157 transitions. Word has length 162 [2020-09-25 10:10:37,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:37,140 INFO L479 AbstractCegarLoop]: Abstraction has 3302 states and 4157 transitions. [2020-09-25 10:10:37,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:10:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4157 transitions. [2020-09-25 10:10:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 10:10:37,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:37,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:37,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:37,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:37,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2059059281, now seen corresponding path program 1 times [2020-09-25 10:10:37,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:37,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130667182] [2020-09-25 10:10:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:42,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 10:10:42,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 10:10:42,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:42,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:10:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 10:10:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:10:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:10:42,764 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-09-25 10:10:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:10:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:43,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:43,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:43,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:10:43,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:43,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 10:10:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:43,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:10:43,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:10:43,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:43,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:10:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:10:43,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130667182] [2020-09-25 10:10:43,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:43,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:10:43,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803110515] [2020-09-25 10:10:43,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:10:43,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:43,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:10:43,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:10:43,386 INFO L87 Difference]: Start difference. First operand 3302 states and 4157 transitions. Second operand 13 states. [2020-09-25 10:10:44,494 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 83