/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=0.8 --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/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:12,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:12,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:12,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:12,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:12,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:12,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:12,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:12,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:12,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:12,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:12,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:12,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:12,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:12,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:12,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:12,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:12,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:12,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:12,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:12,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:12,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:12,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:12,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:12,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:12,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:12,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:12,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:12,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:12,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:12,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:12,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:12,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:12,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:12,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:12,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:12,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:12,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:12,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:12,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:12,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:12,611 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 07:56:12,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:12,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:12,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:12,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:12,659 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:12,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:12,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:12,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:12,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:12,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:12,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:12,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:12,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:12,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:12,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:12,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:12,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:12,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:12,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:12,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:12,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:12,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:12,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:12,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:12,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:12,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:12,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:12,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:12,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:12,665 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:56:13,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:13,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:13,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:13,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:13,124 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:13,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-25 07:56:13,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33639fdc1/e917b5f0c604459ba9d4c1fbf23007e9/FLAGca2770f10 [2020-09-25 07:56:13,840 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:13,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-25 07:56:13,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33639fdc1/e917b5f0c604459ba9d4c1fbf23007e9/FLAGca2770f10 [2020-09-25 07:56:14,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33639fdc1/e917b5f0c604459ba9d4c1fbf23007e9 [2020-09-25 07:56:14,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:14,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:14,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:14,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:14,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:14,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:14,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47211fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14, skipping insertion in model container [2020-09-25 07:56:14,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:14,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:14,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:14,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:14,660 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:14,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:14,931 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:14,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14 WrapperNode [2020-09-25 07:56:14,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:14,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:14,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:14,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:14,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:14,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:14,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:14,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:15,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:15,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:15,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (1/1) ... [2020-09-25 07:56:15,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:15,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:15,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:15,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:15,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (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 07:56:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:16,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:16,540 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:16,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:16 BoogieIcfgContainer [2020-09-25 07:56:16,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:16,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:16,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:16,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:16,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:14" (1/3) ... [2020-09-25 07:56:16,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381e4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:16, skipping insertion in model container [2020-09-25 07:56:16,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:14" (2/3) ... [2020-09-25 07:56:16,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381e4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:16, skipping insertion in model container [2020-09-25 07:56:16,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:16" (3/3) ... [2020-09-25 07:56:16,558 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-09-25 07:56:16,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:16,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:16,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:16,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:16,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:16,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:16,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:16,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:16,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:16,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:16,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 07:56:16,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:16,678 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] [2020-09-25 07:56:16,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:16,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1688264769, now seen corresponding path program 1 times [2020-09-25 07:56:16,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:16,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895732269] [2020-09-25 07:56:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:17,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 07:56:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-25 07:56:17,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:17,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:56:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:56:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:17,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:17,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:56:17,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:17,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:17,596 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 07:56:17,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895732269] [2020-09-25 07:56:17,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:17,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:17,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772499799] [2020-09-25 07:56:17,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:17,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:17,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:17,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:17,632 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:19,654 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 07:56:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:19,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-09-25 07:56:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:19,689 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 07:56:19,689 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 07:56:19,699 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 07:56:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 07:56:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 07:56:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 07:56:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 07:56:19,799 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 48 [2020-09-25 07:56:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:19,800 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 07:56:19,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 07:56:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 07:56:19,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:19,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:19,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:19,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2006898993, now seen corresponding path program 1 times [2020-09-25 07:56:19,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:19,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638808962] [2020-09-25 07:56:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 07:56:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2881 [2020-09-25 07:56:22,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:56:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:22,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:56:22,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:22,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:23,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 07:56:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:23,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:23,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638808962] [2020-09-25 07:56:23,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:23,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:23,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115929083] [2020-09-25 07:56:23,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:23,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:23,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:23,128 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 07:56:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:24,820 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 07:56:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:24,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 07:56:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:24,829 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 07:56:24,829 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 07:56:24,832 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 [2020-09-25 07:56:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 07:56:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 07:56:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 07:56:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 07:56:24,877 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 127 [2020-09-25 07:56:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:24,878 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 07:56:24,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 07:56:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 07:56:24,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:24,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:24,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:24,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:24,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:24,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1780229195, now seen corresponding path program 1 times [2020-09-25 07:56:24,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:24,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909526478] [2020-09-25 07:56:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:25,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 07:56:25,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-09-25 07:56:25,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:25,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:56:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:26,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:26,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:56:26,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:26,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:26,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:56:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:26,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909526478] [2020-09-25 07:56:26,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:26,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:26,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239941954] [2020-09-25 07:56:26,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:26,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:26,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:26,305 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 7 states. [2020-09-25 07:56:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:28,238 INFO L93 Difference]: Finished difference Result 2471 states and 3384 transitions. [2020-09-25 07:56:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:28,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-25 07:56:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:28,258 INFO L225 Difference]: With dead ends: 2471 [2020-09-25 07:56:28,259 INFO L226 Difference]: Without dead ends: 1602 [2020-09-25 07:56:28,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2020-09-25 07:56:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1522. [2020-09-25 07:56:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 07:56:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1898 transitions. [2020-09-25 07:56:28,359 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1898 transitions. Word has length 139 [2020-09-25 07:56:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:28,360 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1898 transitions. [2020-09-25 07:56:28,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1898 transitions. [2020-09-25 07:56:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 07:56:28,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:28,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 07:56:28,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:28,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:28,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891619, now seen corresponding path program 1 times [2020-09-25 07:56:28,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:28,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433313884] [2020-09-25 07:56:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 07:56:33,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:56:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:56:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:33,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:33,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:33,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 07:56:33,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:56:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:33,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:56:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:34,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 07:56:34,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:34,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:34,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:56:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:34,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433313884] [2020-09-25 07:56:34,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:34,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:34,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879109805] [2020-09-25 07:56:34,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:34,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:34,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:34,179 INFO L87 Difference]: Start difference. First operand 1522 states and 1898 transitions. Second operand 8 states. [2020-09-25 07:56:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:37,760 INFO L93 Difference]: Finished difference Result 4671 states and 6582 transitions. [2020-09-25 07:56:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:37,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-09-25 07:56:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:37,782 INFO L225 Difference]: With dead ends: 4671 [2020-09-25 07:56:37,783 INFO L226 Difference]: Without dead ends: 3164 [2020-09-25 07:56:37,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:56:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2020-09-25 07:56:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2953. [2020-09-25 07:56:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2953 states. [2020-09-25 07:56:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3868 transitions. [2020-09-25 07:56:37,895 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3868 transitions. Word has length 216 [2020-09-25 07:56:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:37,896 INFO L479 AbstractCegarLoop]: Abstraction has 2953 states and 3868 transitions. [2020-09-25 07:56:37,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3868 transitions. [2020-09-25 07:56:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 07:56:37,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:37,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:37,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:37,902 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:37,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2140995542, now seen corresponding path program 1 times [2020-09-25 07:56:37,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:37,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354065915] [2020-09-25 07:56:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:42,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 07:56:42,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:56:42,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:56:42,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:42,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:56:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:43,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:56:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:43,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:56:43,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:43,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:56:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 07:56:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:43,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:56:43,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354065915] [2020-09-25 07:56:43,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:43,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:43,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483472271] [2020-09-25 07:56:43,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:43,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:43,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:43,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:43,854 INFO L87 Difference]: Start difference. First operand 2953 states and 3868 transitions. Second operand 9 states. [2020-09-25 07:56:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:48,291 INFO L93 Difference]: Finished difference Result 6408 states and 8601 transitions. [2020-09-25 07:56:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:48,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2020-09-25 07:56:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:48,313 INFO L225 Difference]: With dead ends: 6408 [2020-09-25 07:56:48,313 INFO L226 Difference]: Without dead ends: 3601 [2020-09-25 07:56:48,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2020-09-25 07:56:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3410. [2020-09-25 07:56:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3410 states. [2020-09-25 07:56:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4416 transitions. [2020-09-25 07:56:48,411 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4416 transitions. Word has length 220 [2020-09-25 07:56:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:48,412 INFO L479 AbstractCegarLoop]: Abstraction has 3410 states and 4416 transitions. [2020-09-25 07:56:48,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4416 transitions. [2020-09-25 07:56:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 07:56:48,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:48,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:48,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:48,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:48,418 INFO L82 PathProgramCache]: Analyzing trace with hash -838036601, now seen corresponding path program 1 times [2020-09-25 07:56:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:48,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852599980] [2020-09-25 07:56:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 07:56:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:56:53,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:56:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:56:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:53,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:56:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:53,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:56:53,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:53,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 07:56:53,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:54,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852599980] [2020-09-25 07:56:54,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:54,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:56:54,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698254801] [2020-09-25 07:56:54,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:54,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:54,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:54,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:54,010 INFO L87 Difference]: Start difference. First operand 3410 states and 4416 transitions. Second operand 7 states. [2020-09-25 07:56:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:56,824 INFO L93 Difference]: Finished difference Result 9075 states and 11995 transitions. [2020-09-25 07:56:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:56:56,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-09-25 07:56:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:56,847 INFO L225 Difference]: With dead ends: 9075 [2020-09-25 07:56:56,848 INFO L226 Difference]: Without dead ends: 4862 [2020-09-25 07:56:56,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:56:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2020-09-25 07:56:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 3204. [2020-09-25 07:56:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2020-09-25 07:56:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4027 transitions. [2020-09-25 07:56:56,960 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4027 transitions. Word has length 228 [2020-09-25 07:56:56,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:56,961 INFO L479 AbstractCegarLoop]: Abstraction has 3204 states and 4027 transitions. [2020-09-25 07:56:56,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4027 transitions. [2020-09-25 07:56:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 07:56:56,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:56,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:56,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:56:56,967 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2048556744, now seen corresponding path program 1 times [2020-09-25 07:56:56,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:56,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795098645] [2020-09-25 07:56:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 07:57:02,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:57:02,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:57:02,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-25 07:57:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 07:57:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 07:57:02,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 07:57:02,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 07:57:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:02,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795098645] [2020-09-25 07:57:02,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:02,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:02,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833010572] [2020-09-25 07:57:02,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:02,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:02,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:02,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:02,614 INFO L87 Difference]: Start difference. First operand 3204 states and 4027 transitions. Second operand 8 states.