/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:56,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:56,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:56,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:56,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:56,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:56,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:56,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:56,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:56,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:56,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:56,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:56,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:56,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:56,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:56,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:56,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:56,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:56,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:56,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:56,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:56,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:56,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:56,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:56,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:56,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:56,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:56,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:56,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:56,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:56,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:56,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:56,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:56,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:56,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:56,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:56,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:56,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:56,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:56,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:56,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:56,133 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 08:59:56,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:56,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:56,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:56,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:56,161 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:56,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:56,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:56,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:56,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:56,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:56,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:56,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:56,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:56,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:56,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:56,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:56,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:56,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:56,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:56,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:56,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:56,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:56,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:56,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:56,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:56,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:56,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:56,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:56,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:56,167 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:56,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:56,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:56,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:56,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:56,674 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:56,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 08:59:56,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/337647b56/41950ce9d3f14f7cace38b852d74f927/FLAG657c896b0 [2020-09-25 08:59:57,395 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:57,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 08:59:57,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/337647b56/41950ce9d3f14f7cace38b852d74f927/FLAG657c896b0 [2020-09-25 08:59:57,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/337647b56/41950ce9d3f14f7cace38b852d74f927 [2020-09-25 08:59:57,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:57,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:57,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:57,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:57,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:57,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57, skipping insertion in model container [2020-09-25 08:59:57,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:57,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:58,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:58,301 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:58,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:58,450 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:58,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58 WrapperNode [2020-09-25 08:59:58,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:58,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:58,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:58,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:58,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (1/1) ... [2020-09-25 08:59:58,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:58,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:58,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:58,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:58,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (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 08:59:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 08:59:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 08:59:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:00,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:00,040 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:00,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:00 BoogieIcfgContainer [2020-09-25 09:00:00,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:00,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:00,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:00,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:00,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:57" (1/3) ... [2020-09-25 09:00:00,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264d469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:00, skipping insertion in model container [2020-09-25 09:00:00,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:58" (2/3) ... [2020-09-25 09:00:00,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264d469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:00, skipping insertion in model container [2020-09-25 09:00:00,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:00" (3/3) ... [2020-09-25 09:00:00,060 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 09:00:00,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:00,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:00,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:00,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:00,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:00,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:00,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:00,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:00,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:00,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:00,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 09:00:00,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:00,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:00,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:00,207 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 09:00:00,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:00,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975494197] [2020-09-25 09:00:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:05,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:00:05,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:00:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 09:00:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:00:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:00:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:00:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:05,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:05,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:00:05,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:05,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:00:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:05,847 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 09:00:05,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975494197] [2020-09-25 09:00:05,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:05,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:05,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871912967] [2020-09-25 09:00:05,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:05,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:05,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:05,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:05,884 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:08,151 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 09:00:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:08,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 09:00:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:08,181 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 09:00:08,182 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 09:00:08,194 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 09:00:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 09:00:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 09:00:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:00:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:00:08,316 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 09:00:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:08,317 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:00:08,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:00:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 09:00:08,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:08,328 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 09:00:08,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:08,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 09:00:08,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:08,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385566000] [2020-09-25 09:00:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:13,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:00:13,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:00:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-09-25 09:00:13,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:13,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 09:00:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:13,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:13,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:00:13,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:13,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 09:00:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:13,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:13,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:13,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 09:00:13,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:13,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:00:13,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385566000] [2020-09-25 09:00:13,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:13,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:00:13,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440029774] [2020-09-25 09:00:13,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:00:13,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:13,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:00:13,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:13,931 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 09:00:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:15,931 INFO L93 Difference]: Finished difference Result 1617 states and 2008 transitions. [2020-09-25 09:00:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:00:15,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 09:00:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:15,944 INFO L225 Difference]: With dead ends: 1617 [2020-09-25 09:00:15,945 INFO L226 Difference]: Without dead ends: 1038 [2020-09-25 09:00:15,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 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 09:00:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-25 09:00:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 957. [2020-09-25 09:00:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-09-25 09:00:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1165 transitions. [2020-09-25 09:00:16,033 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1165 transitions. Word has length 159 [2020-09-25 09:00:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:16,034 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1165 transitions. [2020-09-25 09:00:16,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:00:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1165 transitions. [2020-09-25 09:00:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 09:00:16,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:16,041 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 09:00:16,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:16,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 09:00:16,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:16,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103405474] [2020-09-25 09:00:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:21,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 09:00:21,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:00:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:00:21,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:21,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:00:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 09:00:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:21,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:21,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:21,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:21,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:00:21,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:00:21,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:21,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:00:21,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:21,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103405474] [2020-09-25 09:00:21,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:21,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:21,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928437411] [2020-09-25 09:00:21,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:21,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:21,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:21,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:21,409 INFO L87 Difference]: Start difference. First operand 957 states and 1165 transitions. Second operand 5 states. [2020-09-25 09:00:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:23,486 INFO L93 Difference]: Finished difference Result 2622 states and 3292 transitions. [2020-09-25 09:00:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:23,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 09:00:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:23,501 INFO L225 Difference]: With dead ends: 2622 [2020-09-25 09:00:23,501 INFO L226 Difference]: Without dead ends: 1689 [2020-09-25 09:00:23,505 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 [2020-09-25 09:00:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-09-25 09:00:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1455. [2020-09-25 09:00:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1455 states. [2020-09-25 09:00:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1800 transitions. [2020-09-25 09:00:23,576 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1800 transitions. Word has length 168 [2020-09-25 09:00:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:23,577 INFO L479 AbstractCegarLoop]: Abstraction has 1455 states and 1800 transitions. [2020-09-25 09:00:23,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1800 transitions. [2020-09-25 09:00:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 09:00:23,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:23,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:23,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:23,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash -971073182, now seen corresponding path program 1 times [2020-09-25 09:00:23,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:23,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269349732] [2020-09-25 09:00:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 09:00:28,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:00:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:00:28,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 09:00:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:00:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:28,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:00:28,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:28,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:00:28,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 09:00:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:00:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:28,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269349732] [2020-09-25 09:00:28,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:28,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:28,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40035385] [2020-09-25 09:00:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:28,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:28,984 INFO L87 Difference]: Start difference. First operand 1455 states and 1800 transitions. Second operand 5 states. [2020-09-25 09:00:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:30,996 INFO L93 Difference]: Finished difference Result 3875 states and 4922 transitions. [2020-09-25 09:00:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:30,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 09:00:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:31,013 INFO L225 Difference]: With dead ends: 3875 [2020-09-25 09:00:31,014 INFO L226 Difference]: Without dead ends: 2444 [2020-09-25 09:00:31,020 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 [2020-09-25 09:00:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-09-25 09:00:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2176. [2020-09-25 09:00:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2020-09-25 09:00:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2762 transitions. [2020-09-25 09:00:31,117 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2762 transitions. Word has length 185 [2020-09-25 09:00:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:31,118 INFO L479 AbstractCegarLoop]: Abstraction has 2176 states and 2762 transitions. [2020-09-25 09:00:31,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2762 transitions. [2020-09-25 09:00:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 09:00:31,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:31,129 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:31,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:31,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash 860699330, now seen corresponding path program 1 times [2020-09-25 09:00:31,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:31,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093397372] [2020-09-25 09:00:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:36,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 09:00:36,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:00:36,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:00:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:00:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:00:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:00:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:36,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:36,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:36,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 09:00:36,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:36,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:36,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:00:36,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:36,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 09:00:36,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:36,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:00:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:00:36,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093397372] [2020-09-25 09:00:36,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:36,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:36,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483524028] [2020-09-25 09:00:36,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:36,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:36,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:36,616 INFO L87 Difference]: Start difference. First operand 2176 states and 2762 transitions. Second operand 7 states. [2020-09-25 09:00:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:39,004 INFO L93 Difference]: Finished difference Result 4816 states and 6324 transitions. [2020-09-25 09:00:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:39,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 09:00:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:39,021 INFO L225 Difference]: With dead ends: 4816 [2020-09-25 09:00:39,022 INFO L226 Difference]: Without dead ends: 2664 [2020-09-25 09:00:39,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2020-09-25 09:00:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2524. [2020-09-25 09:00:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2524 states. [2020-09-25 09:00:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3209 transitions. [2020-09-25 09:00:39,131 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3209 transitions. Word has length 192 [2020-09-25 09:00:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:39,131 INFO L479 AbstractCegarLoop]: Abstraction has 2524 states and 3209 transitions. [2020-09-25 09:00:39,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3209 transitions. [2020-09-25 09:00:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 09:00:39,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:39,145 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:39,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:39,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:39,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1724740063, now seen corresponding path program 1 times [2020-09-25 09:00:39,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:39,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879485463] [2020-09-25 09:00:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:44,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:44,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 09:00:44,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:00:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:00:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:44,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:00:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:00:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:00:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0