/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:35:52,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:35:52,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:35:52,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:35:52,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:35:52,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:35:52,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:35:52,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:35:52,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:35:52,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:35:52,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:35:52,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:35:52,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:35:52,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:35:52,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:35:52,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:35:52,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:35:52,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:35:52,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:35:52,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:35:52,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:35:52,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:35:52,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:35:52,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:35:52,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:35:52,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:35:52,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:35:52,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:35:52,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:35:52,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:35:52,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:35:52,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:35:52,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:35:52,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:35:52,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:35:52,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:35:52,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:35:52,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:35:52,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:35:52,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:35:52,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:35:52,794 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 [2020-10-14 22:35:52,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:35:52,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:35:52,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:35:52,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:35:52,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:35:52,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:35:52,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:35:52,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:35:52,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:35:52,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:35:52,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:35:52,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:35:52,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:35:52,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:35:52,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:35:52,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:35:52,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:35:52,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:35:52,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:35:52,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:35:52,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:35:52,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:52,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:35:52,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:35:52,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:35:52,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:35:52,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:35:52,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:35:52,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:35:52,823 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:35:53,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:35:53,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:35:53,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:35:53,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:35:53,177 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:35:53,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50.c [2020-10-14 22:35:53,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e41ef8a/4d568e0f649e494192102793785cecde/FLAG5a1027cd2 [2020-10-14 22:35:53,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:35:53,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label50.c [2020-10-14 22:35:53,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e41ef8a/4d568e0f649e494192102793785cecde/FLAG5a1027cd2 [2020-10-14 22:35:54,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e41ef8a/4d568e0f649e494192102793785cecde [2020-10-14 22:35:54,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:35:54,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:35:54,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:54,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:35:54,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:35:54,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:54" (1/1) ... [2020-10-14 22:35:54,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc54d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:54, skipping insertion in model container [2020-10-14 22:35:54,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:54" (1/1) ... [2020-10-14 22:35:54,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:35:54,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:35:55,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:55,683 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:35:56,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:56,238 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:35:56,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56 WrapperNode [2020-10-14 22:35:56,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:56,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:35:56,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:35:56,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:35:56,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... [2020-10-14 22:35:56,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:35:56,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:35:56,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:35:56,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:35:56,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:35:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:35:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:35:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:35:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:35:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:35:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:35:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:35:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:35:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:35:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:35:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:35:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:36:05,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:36:05,362 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:36:05,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:36:05 BoogieIcfgContainer [2020-10-14 22:36:05,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:36:05,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:36:05,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:36:05,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:36:05,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:35:54" (1/3) ... [2020-10-14 22:36:05,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7ba39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:36:05, skipping insertion in model container [2020-10-14 22:36:05,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:56" (2/3) ... [2020-10-14 22:36:05,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7ba39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:36:05, skipping insertion in model container [2020-10-14 22:36:05,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:36:05" (3/3) ... [2020-10-14 22:36:05,389 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label50.c [2020-10-14 22:36:05,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:36:05,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:36:05,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:36:05,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:36:05,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:36:05,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:36:05,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:36:05,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:36:05,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:36:05,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:36:05,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:36:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:36:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 22:36:05,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:05,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:05,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1447275831, now seen corresponding path program 1 times [2020-10-14 22:36:05,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:05,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719240237] [2020-10-14 22:36:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:05,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:06,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:06,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 22:36:06,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 22:36:06,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:06,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 22:36:06,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:36:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:06,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:36:06,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:06,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:06,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:06,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719240237] [2020-10-14 22:36:06,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:36:06,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:36:06,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236190173] [2020-10-14 22:36:06,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:36:06,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:06,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:36:06,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:36:06,291 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:36:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:16,875 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:36:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:36:16,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 22:36:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:16,904 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:36:16,905 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:36:16,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:36:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:36:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:36:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:36:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:36:17,040 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 15 [2020-10-14 22:36:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:17,040 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:36:17,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:36:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:36:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 22:36:17,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:17,045 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:36:17,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:36:17,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:17,047 INFO L82 PathProgramCache]: Analyzing trace with hash 317113279, now seen corresponding path program 1 times [2020-10-14 22:36:17,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:17,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054084831] [2020-10-14 22:36:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:18,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:36:18,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-14 22:36:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:18,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:36:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:36:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:36:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:18,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:18,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:36:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:18,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:18,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 22:36:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:18,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:36:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:18,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054084831] [2020-10-14 22:36:18,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:36:18,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:36:18,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082433957] [2020-10-14 22:36:18,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:18,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:18,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:18,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:18,716 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:36:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:31,856 INFO L93 Difference]: Finished difference Result 2961 states and 4570 transitions. [2020-10-14 22:36:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:31,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-14 22:36:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:31,871 INFO L225 Difference]: With dead ends: 2961 [2020-10-14 22:36:31,871 INFO L226 Difference]: Without dead ends: 1965 [2020-10-14 22:36:31,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-10-14 22:36:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1913. [2020-10-14 22:36:31,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-14 22:36:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2481 transitions. [2020-10-14 22:36:31,952 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2481 transitions. Word has length 86 [2020-10-14 22:36:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:31,952 INFO L479 AbstractCegarLoop]: Abstraction has 1913 states and 2481 transitions. [2020-10-14 22:36:31,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2481 transitions. [2020-10-14 22:36:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 22:36:31,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:31,956 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:36:31,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:36:31,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:31,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1183880273, now seen corresponding path program 1 times [2020-10-14 22:36:31,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:31,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860475300] [2020-10-14 22:36:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:32,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 22:36:32,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-14 22:36:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:32,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:36:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 22:36:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:32,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:32,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:32,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:36:32,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:32,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:36:32,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:33,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:33,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:36:33,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 22:36:33,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:33,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:36:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:33,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860475300] [2020-10-14 22:36:33,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:33,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:33,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897888680] [2020-10-14 22:36:33,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:36:33,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:33,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:36:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:36:33,142 INFO L87 Difference]: Start difference. First operand 1913 states and 2481 transitions. Second operand 8 states. [2020-10-14 22:36:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:55,876 INFO L93 Difference]: Finished difference Result 7485 states and 9836 transitions. [2020-10-14 22:36:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:55,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-14 22:36:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:55,907 INFO L225 Difference]: With dead ends: 7485 [2020-10-14 22:36:55,907 INFO L226 Difference]: Without dead ends: 4690 [2020-10-14 22:36:55,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2020-10-14 22:36:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 4648. [2020-10-14 22:36:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4648 states. [2020-10-14 22:36:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 5873 transitions. [2020-10-14 22:36:56,114 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 5873 transitions. Word has length 89 [2020-10-14 22:36:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:56,114 INFO L479 AbstractCegarLoop]: Abstraction has 4648 states and 5873 transitions. [2020-10-14 22:36:56,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:36:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 5873 transitions. [2020-10-14 22:36:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 22:36:56,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:56,132 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 22:36:56,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:36:56,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:56,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1590219995, now seen corresponding path program 1 times [2020-10-14 22:36:56,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:56,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838977039] [2020-10-14 22:36:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:57,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:57,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 22:36:57,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-14 22:36:57,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:36:57,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:57,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:57,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:36:57,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:57,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:57,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:57,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 22:36:57,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:57,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:36:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 22:36:58,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:58,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:36:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:36:58,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838977039] [2020-10-14 22:36:58,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:58,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:58,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582048969] [2020-10-14 22:36:58,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:58,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:58,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:58,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:58,206 INFO L87 Difference]: Start difference. First operand 4648 states and 5873 transitions. Second operand 7 states. [2020-10-14 22:37:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:18,718 INFO L93 Difference]: Finished difference Result 11600 states and 15274 transitions. [2020-10-14 22:37:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:37:18,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-14 22:37:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:18,765 INFO L225 Difference]: With dead ends: 11600 [2020-10-14 22:37:18,765 INFO L226 Difference]: Without dead ends: 6958 [2020-10-14 22:37:18,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:37:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2020-10-14 22:37:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6922. [2020-10-14 22:37:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6922 states. [2020-10-14 22:37:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6922 states to 6922 states and 8700 transitions. [2020-10-14 22:37:19,003 INFO L78 Accepts]: Start accepts. Automaton has 6922 states and 8700 transitions. Word has length 171 [2020-10-14 22:37:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:19,005 INFO L479 AbstractCegarLoop]: Abstraction has 6922 states and 8700 transitions. [2020-10-14 22:37:19,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:37:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6922 states and 8700 transitions. [2020-10-14 22:37:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 22:37:19,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:19,008 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 22:37:19,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:37:19,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:19,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1939849754, now seen corresponding path program 1 times [2020-10-14 22:37:19,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:19,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286902921] [2020-10-14 22:37:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:19,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:37:19,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:37:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-14 22:37:19,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:19,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:37:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:37:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:37:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:37:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:20,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:20,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:37:20,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:37:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:37:20,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:37:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:37:20,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:37:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:37:20,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286902921] [2020-10-14 22:37:20,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:20,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:37:20,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356424963] [2020-10-14 22:37:20,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:37:20,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:20,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:37:20,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:37:20,457 INFO L87 Difference]: Start difference. First operand 6922 states and 8700 transitions. Second operand 5 states. [2020-10-14 22:37:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:37,184 INFO L93 Difference]: Finished difference Result 14301 states and 18269 transitions. [2020-10-14 22:37:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:37:37,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 22:37:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:37,219 INFO L225 Difference]: With dead ends: 14301 [2020-10-14 22:37:37,220 INFO L226 Difference]: Without dead ends: 7385 [2020-10-14 22:37:37,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:37:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7385 states. [2020-10-14 22:37:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7385 to 7360. [2020-10-14 22:37:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7360 states. [2020-10-14 22:37:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7360 states to 7360 states and 9508 transitions. [2020-10-14 22:37:37,402 INFO L78 Accepts]: Start accepts. Automaton has 7360 states and 9508 transitions. Word has length 188 [2020-10-14 22:37:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:37,405 INFO L479 AbstractCegarLoop]: Abstraction has 7360 states and 9508 transitions. [2020-10-14 22:37:37,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:37:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7360 states and 9508 transitions. [2020-10-14 22:37:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 22:37:37,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:37,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 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] [2020-10-14 22:37:37,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:37:37,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1902310914, now seen corresponding path program 1 times [2020-10-14 22:37:37,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:37,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928536118] [2020-10-14 22:37:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:41,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 22:37:41,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:37:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3620 [2020-10-14 22:37:41,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:41,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:37:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 22:37:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:41,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:41,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:37:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:41,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:41,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:41,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 22:37:41,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:41,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:37:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:41,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:41,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:37:41,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:41,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 22:37:41,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:41,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:37:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:41,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:37:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:41,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:42,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:37:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:42,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:37:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-14 22:37:42,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928536118] [2020-10-14 22:37:42,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:42,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:37:42,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504982522] [2020-10-14 22:37:42,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:37:42,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:42,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:37:42,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:37:42,202 INFO L87 Difference]: Start difference. First operand 7360 states and 9508 transitions. Second operand 8 states. [2020-10-14 22:38:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:06,785 INFO L93 Difference]: Finished difference Result 19921 states and 27301 transitions. [2020-10-14 22:38:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:38:06,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-14 22:38:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:06,888 INFO L225 Difference]: With dead ends: 19921 [2020-10-14 22:38:06,888 INFO L226 Difference]: Without dead ends: 12116 [2020-10-14 22:38:06,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:38:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12116 states. [2020-10-14 22:38:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12116 to 9610. [2020-10-14 22:38:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-14 22:38:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 12063 transitions. [2020-10-14 22:38:07,319 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 12063 transitions. Word has length 259 [2020-10-14 22:38:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:07,321 INFO L479 AbstractCegarLoop]: Abstraction has 9610 states and 12063 transitions. [2020-10-14 22:38:07,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:38:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 12063 transitions. [2020-10-14 22:38:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 22:38:07,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:07,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:07,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:38:07,332 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:07,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1053158642, now seen corresponding path program 1 times [2020-10-14 22:38:07,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:07,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685324527] [2020-10-14 22:38:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:11,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:11,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 22:38:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:38:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4034 [2020-10-14 22:38:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:11,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:38:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:38:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 22:38:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:11,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:38:11,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:11,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:11,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:11,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:11,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:38:11,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:11,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:38:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:12,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:12,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:38:12,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:38:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:38:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:12,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:38:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:38:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:12,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:12,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:38:12,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:38:12,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:12,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:38:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 172 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 22:38:12,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685324527] [2020-10-14 22:38:12,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:12,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:12,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363615267] [2020-10-14 22:38:12,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:38:12,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:12,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:38:12,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:38:12,556 INFO L87 Difference]: Start difference. First operand 9610 states and 12063 transitions. Second operand 7 states. [2020-10-14 22:38:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:34,328 INFO L93 Difference]: Finished difference Result 19679 states and 25126 transitions. [2020-10-14 22:38:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:38:34,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 22:38:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:34,381 INFO L225 Difference]: With dead ends: 19679 [2020-10-14 22:38:34,382 INFO L226 Difference]: Without dead ends: 10510 [2020-10-14 22:38:34,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:38:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10510 states. [2020-10-14 22:38:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10510 to 10045. [2020-10-14 22:38:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10045 states. [2020-10-14 22:38:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10045 states to 10045 states and 12726 transitions. [2020-10-14 22:38:34,727 INFO L78 Accepts]: Start accepts. Automaton has 10045 states and 12726 transitions. Word has length 265 [2020-10-14 22:38:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:34,728 INFO L479 AbstractCegarLoop]: Abstraction has 10045 states and 12726 transitions. [2020-10-14 22:38:34,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:38:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 10045 states and 12726 transitions. [2020-10-14 22:38:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 22:38:34,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:34,735 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:34,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:38:34,735 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1933081285, now seen corresponding path program 1 times [2020-10-14 22:38:34,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:34,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135251879] [2020-10-14 22:38:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:39,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 22:38:39,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:38:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4454 [2020-10-14 22:38:39,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:39,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:38:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:38:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:39,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:39,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:39,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:38:39,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:39,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:39,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:39,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:39,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:38:39,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:39,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:39,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:39,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:39,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:38:39,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:39,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:38:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 22:38:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:39,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:38:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:38:40,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 22:38:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:40,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:40,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:40,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:38:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:38:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 112 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:38:40,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135251879] [2020-10-14 22:38:40,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:40,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:40,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307603969] [2020-10-14 22:38:40,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:38:40,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:40,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:38:40,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:38:40,359 INFO L87 Difference]: Start difference. First operand 10045 states and 12726 transitions. Second operand 7 states. [2020-10-14 22:39:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:12,193 INFO L93 Difference]: Finished difference Result 24491 states and 32232 transitions. [2020-10-14 22:39:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:39:12,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 22:39:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:12,248 INFO L225 Difference]: With dead ends: 24491 [2020-10-14 22:39:12,248 INFO L226 Difference]: Without dead ends: 14887 [2020-10-14 22:39:12,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:39:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14887 states. [2020-10-14 22:39:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14887 to 14340. [2020-10-14 22:39:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14340 states. [2020-10-14 22:39:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 18176 transitions. [2020-10-14 22:39:12,607 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 18176 transitions. Word has length 275 [2020-10-14 22:39:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:12,608 INFO L479 AbstractCegarLoop]: Abstraction has 14340 states and 18176 transitions. [2020-10-14 22:39:12,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 18176 transitions. [2020-10-14 22:39:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 22:39:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:12,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:12,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:39:12,614 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:12,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2023767700, now seen corresponding path program 1 times [2020-10-14 22:39:12,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:12,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228114017] [2020-10-14 22:39:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:17,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:17,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 22:39:17,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:39:17,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 22:39:17,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:17,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:39:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:39:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:17,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:17,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:17,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:17,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:39:17,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:17,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:17,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:18,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:18,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:18,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 22:39:18,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:18,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:39:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:18,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:18,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:39:18,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 22:39:18,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:18,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:39:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:39:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:18,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:18,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:39:18,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:18,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:39:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 112 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:39:18,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228114017] [2020-10-14 22:39:18,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:18,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:39:18,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130005046] [2020-10-14 22:39:18,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:18,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:18,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:18,974 INFO L87 Difference]: Start difference. First operand 14340 states and 18176 transitions. Second operand 7 states. [2020-10-14 22:39:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:34,518 INFO L93 Difference]: Finished difference Result 30571 states and 38706 transitions. [2020-10-14 22:39:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:39:34,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-14 22:39:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:34,581 INFO L225 Difference]: With dead ends: 30571 [2020-10-14 22:39:34,581 INFO L226 Difference]: Without dead ends: 16672 [2020-10-14 22:39:34,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:39:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16672 states. [2020-10-14 22:39:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16672 to 16124. [2020-10-14 22:39:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16124 states. [2020-10-14 22:39:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 20261 transitions. [2020-10-14 22:39:34,970 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 20261 transitions. Word has length 282 [2020-10-14 22:39:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:34,971 INFO L479 AbstractCegarLoop]: Abstraction has 16124 states and 20261 transitions. [2020-10-14 22:39:34,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 20261 transitions. [2020-10-14 22:39:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 22:39:34,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:34,978 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 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] [2020-10-14 22:39:34,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:39:34,978 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1931262796, now seen corresponding path program 1 times [2020-10-14 22:39:34,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:34,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076209746] [2020-10-14 22:39:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 22:39:40,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:39:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 22:39:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:39:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:39:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:40,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:39:40,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 22:39:40,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:39:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:39:40,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:39:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:39:40,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:39:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:39:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:39:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 29 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:39:41,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076209746] [2020-10-14 22:39:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:41,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:39:41,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478844780] [2020-10-14 22:39:41,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:39:41,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:39:41,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:39:41,382 INFO L87 Difference]: Start difference. First operand 16124 states and 20261 transitions. Second operand 10 states. [2020-10-14 22:39:41,549 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41