/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=SMALLEST --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:01,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:01,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:02,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:02,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:02,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:02,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:02,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:02,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:02,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:02,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:02,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:02,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:02,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:02,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:02,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:02,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:02,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:02,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:02,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:02,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:02,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:02,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:02,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:02,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:02,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:02,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:02,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:02,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:02,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:02,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:02,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:02,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:02,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:02,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:02,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:02,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:02,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:02,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:02,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:02,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:02,102 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 18:23:02,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:02,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:02,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:02,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:02,149 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:02,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:02,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:02,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:02,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:02,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:02,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:02,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:02,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:02,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:02,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:02,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:02,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:02,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:02,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:02,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:02,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:02,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:02,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:02,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:02,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:02,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:02,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:02,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:02,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:02,156 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:23:02,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:02,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:02,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:02,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:02,624 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:02,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-24 18:23:02,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adc212b2a/9af5b1272e5843ddaea41c17c2621f2a/FLAG4ae56f4b5 [2020-09-24 18:23:03,362 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:03,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-24 18:23:03,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adc212b2a/9af5b1272e5843ddaea41c17c2621f2a/FLAG4ae56f4b5 [2020-09-24 18:23:03,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adc212b2a/9af5b1272e5843ddaea41c17c2621f2a [2020-09-24 18:23:03,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:03,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:03,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:03,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:03,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:03,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:03" (1/1) ... [2020-09-24 18:23:03,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce6acaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:03, skipping insertion in model container [2020-09-24 18:23:03,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:03" (1/1) ... [2020-09-24 18:23:03,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:03,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:04,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:04,443 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:04,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:04,599 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:04,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04 WrapperNode [2020-09-24 18:23:04,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:04,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:04,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:04,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:04,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (1/1) ... [2020-09-24 18:23:04,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:04,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:04,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:04,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:04,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (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 18:23:04,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:04,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:06,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:06,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:06,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:06 BoogieIcfgContainer [2020-09-24 18:23:06,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:06,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:06,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:06,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:06,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:03" (1/3) ... [2020-09-24 18:23:06,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd67a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:06, skipping insertion in model container [2020-09-24 18:23:06,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:04" (2/3) ... [2020-09-24 18:23:06,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd67a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:06, skipping insertion in model container [2020-09-24 18:23:06,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:06" (3/3) ... [2020-09-24 18:23:06,145 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-24 18:23:06,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:06,169 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:06,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:06,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:06,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:06,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:06,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:06,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:06,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:06,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:06,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 18:23:06,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:06,280 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] [2020-09-24 18:23:06,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-24 18:23:06,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:06,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317879616] [2020-09-24 18:23:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 18:23:11,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:23:11,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:23:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:23:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:11,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:23:11,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:23:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:11,800 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 18:23:11,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317879616] [2020-09-24 18:23:11,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:11,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:11,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43400571] [2020-09-24 18:23:11,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:11,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:11,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:11,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:11,834 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:13,892 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-24 18:23:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:13,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-24 18:23:13,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:13,917 INFO L225 Difference]: With dead ends: 1247 [2020-09-24 18:23:13,917 INFO L226 Difference]: Without dead ends: 669 [2020-09-24 18:23:13,926 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 [2020-09-24 18:23:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-24 18:23:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-24 18:23:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:23:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:23:14,024 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 114 [2020-09-24 18:23:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:14,025 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:23:14,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:23:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 18:23:14,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:14,039 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-24 18:23:14,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:14,040 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:14,040 INFO L82 PathProgramCache]: Analyzing trace with hash 144430378, now seen corresponding path program 1 times [2020-09-24 18:23:14,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:14,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928921500] [2020-09-24 18:23:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:23:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 18:23:19,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:23:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:19,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:19,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:19,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:19,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928921500] [2020-09-24 18:23:19,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:19,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:19,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125688331] [2020-09-24 18:23:19,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:19,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:19,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:19,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:19,343 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:23:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:21,263 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-24 18:23:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:21,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-24 18:23:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:21,272 INFO L225 Difference]: With dead ends: 1400 [2020-09-24 18:23:21,272 INFO L226 Difference]: Without dead ends: 801 [2020-09-24 18:23:21,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-24 18:23:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-24 18:23:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-24 18:23:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-24 18:23:21,313 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 131 [2020-09-24 18:23:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:21,314 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-24 18:23:21,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-24 18:23:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:23:21,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:21,318 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] [2020-09-24 18:23:21,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:21,318 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:21,319 INFO L82 PathProgramCache]: Analyzing trace with hash -889034989, now seen corresponding path program 1 times [2020-09-24 18:23:21,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:21,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737218525] [2020-09-24 18:23:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 18:23:26,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:23:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 18:23:26,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:23:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:26,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:26,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:26,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:26,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:26,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:23:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:26,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737218525] [2020-09-24 18:23:26,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:26,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:26,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041494454] [2020-09-24 18:23:26,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:26,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:26,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:26,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:26,554 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-24 18:23:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:28,557 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-24 18:23:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:28,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-24 18:23:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:28,563 INFO L225 Difference]: With dead ends: 1709 [2020-09-24 18:23:28,563 INFO L226 Difference]: Without dead ends: 955 [2020-09-24 18:23:28,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-24 18:23:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-24 18:23:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-24 18:23:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-24 18:23:28,604 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 136 [2020-09-24 18:23:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:28,605 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-24 18:23:28,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-24 18:23:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:23:28,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:28,609 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:28,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:28,610 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1305788702, now seen corresponding path program 1 times [2020-09-24 18:23:28,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:28,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143474520] [2020-09-24 18:23:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 18:23:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:23:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:23:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:23:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:33,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:33,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:33,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:33,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:33,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 18:23:33,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:33,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143474520] [2020-09-24 18:23:33,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:33,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:33,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209611209] [2020-09-24 18:23:33,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:33,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:33,900 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 5 states. [2020-09-24 18:23:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:35,704 INFO L93 Difference]: Finished difference Result 2449 states and 2916 transitions. [2020-09-24 18:23:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:35,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-24 18:23:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:35,725 INFO L225 Difference]: With dead ends: 2449 [2020-09-24 18:23:35,726 INFO L226 Difference]: Without dead ends: 1542 [2020-09-24 18:23:35,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-09-24 18:23:35,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1532. [2020-09-24 18:23:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-09-24 18:23:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1812 transitions. [2020-09-24 18:23:35,833 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1812 transitions. Word has length 143 [2020-09-24 18:23:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:35,834 INFO L479 AbstractCegarLoop]: Abstraction has 1532 states and 1812 transitions. [2020-09-24 18:23:35,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1812 transitions. [2020-09-24 18:23:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 18:23:35,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:35,845 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:35,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:35,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:35,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:35,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1496133130, now seen corresponding path program 1 times [2020-09-24 18:23:35,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:35,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95573067] [2020-09-24 18:23:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:23:40,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:23:40,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:23:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:23:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:41,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:41,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:41,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:23:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:41,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:23:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 18:23:41,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95573067] [2020-09-24 18:23:41,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:41,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:41,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756956535] [2020-09-24 18:23:41,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:41,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:41,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:41,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:41,127 INFO L87 Difference]: Start difference. First operand 1532 states and 1812 transitions. Second operand 5 states. [2020-09-24 18:23:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:43,145 INFO L93 Difference]: Finished difference Result 4210 states and 5119 transitions. [2020-09-24 18:23:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:43,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-24 18:23:43,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:43,166 INFO L225 Difference]: With dead ends: 4210 [2020-09-24 18:23:43,167 INFO L226 Difference]: Without dead ends: 2700 [2020-09-24 18:23:43,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-09-24 18:23:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2454. [2020-09-24 18:23:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-09-24 18:23:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 2952 transitions. [2020-09-24 18:23:43,262 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 2952 transitions. Word has length 161 [2020-09-24 18:23:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:43,263 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 2952 transitions. [2020-09-24 18:23:43,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 2952 transitions. [2020-09-24 18:23:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 18:23:43,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:43,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:23:43,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:43,273 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:43,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:43,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1711329584, now seen corresponding path program 1 times [2020-09-24 18:23:43,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:43,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143496576] [2020-09-24 18:23:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-24 18:23:48,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:23:48,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:23:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:23:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:48,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:23:48,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:23:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:23:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 18:23:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:23:48,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:23:48,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:23:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 18:23:48,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143496576] [2020-09-24 18:23:48,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:48,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:48,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94839479] [2020-09-24 18:23:48,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:48,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:48,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:48,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:48,671 INFO L87 Difference]: Start difference. First operand 2454 states and 2952 transitions. Second operand 7 states.